Second Amendment to the United States Constitution

Text

There are several versions of the text of the Second Amendment, each with capitalization or punctuation differences. Differences exist between the version passed by Congress and put on display and the versions ratified by the states. These differences have been a focus of debate regarding the meaning of the amendment, particularly regarding the importance of what the courts have called the prefatory clause.

The final, handwritten original of the Bill of Rights as passed by Congress, with the rest of the original prepared by scribe William Lambert, is preserved in the National Archives. This is the version ratified by Delaware and used by the Supreme Court in District of Columbia v. Heller:

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

Some state-ratified versions, such as Maryland's, omitted the first or final commas:

A well regulated Militia being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

The ratification acts from New York, Pennsylvania, Rhode Island, and South Carolina contained only one comma, but with differences in capitalization. Pennsylvania's act states:

A well regulated Militia being necessary to the security of a free State, the right of the people to keep and bear Arms shall not be infringed.

The ratification act from New Jersey has no commas:

A well regulated Militia being necessary to the security of a free State the right of the people to keep and bear Arms shall not be infringed.

Pre-Constitution background

Influence of the English Bill of Rights of 1689

The right of Protestants to bear arms in English history is regarded in English common law as a subordinate auxiliary right of the primary rights to personal security, personal liberty, and private property. According to Sir William Blackstone, "The ... last auxiliary right of the subject ... is that of having arms for their defence, suitable to their condition and degree, and such as are allowed by law. Which is ... declared by ... statute, and is indeed a public allowance, under due restrictions, of the natural right of resistance and self-preservation, when the sanctions of society and laws are found insufficient to restrain the violence of oppression."

The English Bill of Rights of 1689 emerged from a tempestuous period in English politics during which two issues were major sources of conflict: the authority of the king to govern without the consent of Parliament, and the role of Catholics in a country with a staunchly Protestant majority. Ultimately, the Catholic James II was overthrown in the Glorious Revolution, and his successors, the Protestants William III and Mary II, accepted the conditions that were codified in the bill. One of the issues the bill resolved was the authority of the king to disarm his subjects, after James II had disarmed many Protestants that were "suspected or knowne" of disliking the government, and had argued with Parliament over his desire to maintain a standing (or permanent) army. The bill states that it is acting to restore "ancient rights" trampled upon by James II, though some have argued that the English Bill of Rights created a new right to have arms, which developed out of a duty to have arms. In District of Columbia v. Heller (2008), the Supreme Court did not accept this view, remarking that the English right at the time of the passing of the English Bill of Rights was "clearly an individual right, having nothing whatsoever to do with service in the militia" and that it was a right not to be disarmed by the Crown and was not the granting of a new right to have arms.

The text of the English Bill of Rights of 1689 includes language protecting the right of Protestants against disarmament by the Crown, stating: "That the Subjects which are Protestants may have Arms for their Defence suitable to their Conditions and as allowed by Law." It also contained text that aspired to bind future Parliaments, though under English constitutional law no Parliament can bind any later Parliament.

The statement in the English Bill of Rights concerning the right to bear arms is often quoted only in the passage where it is written as above and not in its full context. In its full context it is clear that the bill was asserting the right of Protestant citizens not to be disarmed by the king without the consent of Parliament and was merely restoring rights to Protestants that the previous King briefly and unlawfully had removed. In its full context it reads:

Influence of the British Militia Act 1757

In 1757 Great Britain's Parliament created the Militia Act 1757 (30 Geo. 2. c. 25), "An Act for better ordering of the militia forces in the several counties of that part of Great Britain called England". This act declared that "a well-ordered and well-disciplined militia is essentially necessary to the safety, peace and prosperity of this kingdom," and that the current militia laws for the regulation of the militia were defective and ineffectual. Influenced by this act, in 1775 Timothy Pickering created "An Easy Plan of Discipline for a Militia". Greatly inhibited by the events surrounding Salem, Massachusetts, where the plan was printed, Pickering submitted the writing to George Washington. On May 1, 1776, the Massachusetts Bay Councell resolved that Pickering's discipline, a modification of the 1757 act, be the discipline of their Militia. On March 29, 1779, for members of the Continental Army this was replaced by Von Steuben's Regulations for the Order and Discipline of the Troops of the United States. With ratification of the Second Amendment, after May 8, 1792, the entire United States Militia, barring two declarations, would be regulated by Von Steuben's Discipline.

America before the U.S. Constitution

King Charles I authorized the use of arms for special defense and safety, on land and at sea, against:

destructive forces

invasive forces

detrimental forces

annoying forces

The Military Company of Massachusetts had already ordered munition before the authorization was signed. Early Americans had other uses for arms, besides the uses King Charles had in mind:

safeguarding against tyrannical governments

suppressing insurrection, allegedly including slave revolts, though professor Paul Finkelman has pointed out that the claim of a specific intent to protect the ability to put down slave revolts is not supported by the historical record

facilitating a natural right of self-defense

Which of these considerations were thought of as most important and ultimately found expression in the Second Amendment is disputed. Some of these purposes were explicitly mentioned in early state constitutions; for example, the Pennsylvania Constitution of 1776 asserted that, "the people have a right to bear arms for the defence of themselves and the state."

During the 1760s pre-revolutionary period, the established colonial militia was composed of colonists, including many who were loyal to British rule. As defiance and opposition to British rule developed, a distrust of these Loyalists in the militia became widespread among the colonists known as Patriots, who favored independence from British rule. As a result, some Patriots created their own militias that excluded the Loyalists and then sought to stock independent armories for their militias. In response to this arms build-up, the British Parliament established an embargo of firearms, parts and ammunition against the American colonies which in some instance came to be referred to as Powder Alarms. King George III also began disarming individuals who were in the most rebellious areas in the 1760s and 1770s.

Drafting and adoption of the Constitution

In March 1785, delegates from Virginia and Maryland assembled at the Mount Vernon Conference to fashion a remedy to the inefficiencies of the Articles of Confederation. The following year, at a meeting in Annapolis, Maryland, 12 delegates from five states (New Jersey, New York, Pennsylvania, Delaware, and Virginia) met and drew up a list of problems with the current government model. At its conclusion, the delegates scheduled a follow-up meeting in Philadelphia, Pennsylvania for May 1787 to present solutions to these problems, such as the absence of:

interstate arbitration processes to handle quarrels between states;

sufficiently trained and armed intrastate security forces to suppress insurrection;

a national militia to repel foreign invaders.

It quickly became apparent that the solution to all three of these problems required shifting control of the states' militias to the federal Congress and giving it the power to raise a standing army. Article 1, Section 8 of the Constitution codified these changes by allowing the Congress to provide for the common defense and general welfare of the United States by doing the following:

raise and support armies, but no appropriation of money to that use shall be for a longer term than two years;

provide and maintain a navy;

make rules for the government and regulation of the land and naval forces;

provide for calling forth the militia to execute the laws of the union, suppress insurrections and repel invasions;

provide for organizing, arming, and disciplining the militia, and for governing such part of them as may be employed in the service of the United States, reserving to the states respectively, the appointment of the officers, and the authority of training the militia according to the discipline prescribed by Congress.

Debates on amending the Constitution

The debate surrounding the Constitution's ratification is of practical importance, particularly to adherents of originalist and strict constructionist legal theories. In the context of such legal theories and elsewhere, it is important to understand the language of the Constitution in terms of what that language meant to the people who wrote and ratified the Constitution.

Robert Whitehill, a delegate from Pennsylvania, sought to clarify the draft Constitution with a bill of rights explicitly granting individuals the right to hunt on their own land in season, though Whitehill's language was never debated.

Argument for state power

There was substantial opposition to the new Constitution because it moved the power to arm the state militias from the states to the federal government. This created a fear that the federal government, by neglecting the upkeep of the militia, could have overwhelming military force at its disposal through its power to maintain a standing army and navy, leading to a confrontation with the states, encroaching on the states' reserved powers and even engaging in a military takeover. Article VI of the Articles of Confederation states:

No vessel of war shall be kept up in time of peace by any State, except such number only, as shall be deemed necessary by the united States in congress assembled, for the defense of such State, or its trade; nor shall any body of forces be kept up by any State in time of peace, except such number only, as in the judgement of the united States, in congress assembled, shall be deemed requisite to garrison the forts necessary for the defense of such State; but every State shall always keep up a well-regulated and disciplined militia, sufficiently armed and accoutered, and shall provide and constantly have ready for use, in public stores, a due number of field pieces and tents, and a proper quantity of arms, ammunition and camp equipage.

In contrast, Article I, Section 8, Clause 16 of the U.S. Constitution states:

To provide for organizing, arming, and disciplining, the Militia, and for governing such Part of them as may be employed in the Service of the United States, reserving to the States respectively, the Appointment of the Officers, and the Authority of training the Militia according to the discipline prescribed by Congress.

Government tyranny

A foundation of American political thought during the Revolutionary period was concern about political corruption and governmental tyranny. Even the federalists, fending off their opponents who accused them of creating an oppressive regime, were careful to acknowledge the risks of tyranny. Against that backdrop, the framers saw the personal right to bear arms as a potential check against tyranny. Theodore Sedgwick of Massachusetts expressed this sentiment by declaring that it is "a chimerical idea to suppose that a country like this could ever be enslaved ... Is it possible ... that an army could be raised for the purpose of enslaving themselves or their brethren? Or, if raised whether they could subdue a nation of freemen, who know how to prize liberty and who have arms in their hands?" Noah Webster similarly argued:

Before a standing army can rule the people must be disarmed; as they are in almost every kingdom in Europe. The supreme power in America cannot enforce unjust laws by the sword; because the whole body of the people are armed, and constitute a force superior to any band of regular troops that can be, on any pretence, raised in the United States.

George Mason also argued the importance of the militia and right to bear arms by reminding his compatriots of the British government's efforts "to disarm the people; that it was the best and most effectual way to enslave them ... by totally disusing and neglecting the militia." He also clarified that under prevailing practice the militia included all people, rich and poor. "Who are the militia? They consist now of the whole people, except a few public officers." Because all were members of the militia, all enjoyed the right to individually bear arms to serve therein.

Writing after the ratification of the Constitution, but before the election of the first Congress, James Monroe included "the right to keep and bear arms" in a list of basic "human rights", which he proposed to be added to the Constitution.

Patrick Henry argued in the Virginia ratification convention on June 5, 1788, for the dual rights to arms and resistance to oppression:

Guard with jealous attention the public liberty. Suspect everyone who approaches that jewel. Unfortunately, nothing will preserve it but downright force. Whenever you give up that force, you are inevitably ruined.

To maintain slavery

In the slave states, the militia was available for military operations, but its biggest function was to police the slaves. According to Dr Carl T. Bogus, Professor of Law of the Roger Williams University Law School in Rhode Island, the Second Amendment was written to assure the Southern states that Congress would not undermine the slave system by using its newly acquired constitutional authority over the militia to disarm the state militia and thereby destroy the South's principal instrument of slave control.

In his close analysis of James Madison's writings, Bogus describes the South's obsession with militias during the ratification process:

The militia remained the principal means of protecting the social order and preserving white control over an enormous black population. Anything that might weaken this system presented the gravest of threats.

This preoccupation is clearly expressed in 1788 by the slaveholder Patrick Henry:

If the country be invaded, a state may go to war, but cannot suppress insurrections [under this new Constitution]. If there should happen an insurrection of slaves, the country cannot be said to be invaded. They cannot, therefore, suppress it without the interposition of Congress ... Congress, and Congress only [under this new Constitution; addition not mentioned in source], can call forth the militia.

Therefore, Bogus argues, in a compromise with the slave states, and to reassure Patrick Henry, George Mason and other slaveholders that they would be able to keep their slave control militias independent of the federal government, James Madison (also slave owner) redrafted the Second Amendment into its current form "for the specific purpose of assuring the Southern states, and particularly his constituents in Virginia, that the federal government would not undermine their security against slave insurrection by disarming the militia."

Legal historian Paul Finkelman argues that this scenario is implausible. Henry and Mason were political enemies of Madison's, and neither man was in Congress at the time Madison drafted Bill of Rights; moreover, Patrick Henry argued against the ratification of both the Constitution and the Second Amendment, and it was Henry's opposition that led Patrick's home state of Virginia to be the last to ratify.

Conflict and compromise in Congress produce the Bill of Rights

James Madison's initial proposal for a bill of rights was brought to the floor of the House of Representatives on June 8, 1789, during the first session of Congress. The initial proposed passage relating to arms was:

The right of the people to keep and bear arms shall not be infringed; a well armed and well regulated militia being the best security of a free country: but no person religiously scrupulous of bearing arms shall be compelled to render military service in person.

On July 21, Madison again raised the issue of his bill and proposed that a select committee be created to report on it. The House voted in favor of Madison's motion, and the Bill of Rights entered committee for review. The committee returned to the House a reworded version of the Second Amendment on July 28. On August 17, that version was read into the Journal:

A well regulated militia, composed of the body of the people, being the best security of a free State, the right of the people to keep and bear arms shall not be infringed; but no person religiously scrupulous shall be compelled to bear arms.

In late August 1789, the House debated and modified the Second Amendment. These debates revolved primarily around the risk of "mal-administration of the government" using the "religiously scrupulous" clause to destroy the militia as British forces had attempted to destroy the Patriot militia at the commencement of the American Revolution. These concerns were addressed by modifying the final clause, and on August 24, the House sent the following version to the Senate:

A well regulated militia, composed of the body of the people, being the best security of a free state, the right of the people to keep and bear arms shall not be infringed; but no one religiously scrupulous of bearing arms shall be compelled to render military service in person.

The next day, August 25, the Senate received the amendment from the House and entered it into the Senate Journal. However, the Senate scribe added a comma before "shall not be infringed" and changed the semicolon separating that phrase from the religious exemption portion to a comma:

Militia following ratification

During the first two decades following the ratification of the Second Amendment, public opposition to standing armies, among Anti-Federalists and Federalists alike, persisted and manifested itself locally as a general reluctance to create a professional armed police force, instead relying on county sheriffs, constables and night watchmen to enforce local ordinances. Though sometimes compensated, often these positions were unpaid – held as a matter of civic duty. In these early decades, law enforcement officers were rarely armed with firearms, using billy clubs as their sole defensive weapons. In serious emergencies, a posse comitatus, militia company, or group of vigilantes assumed law enforcement duties; these individuals were more likely than the local sheriff to be armed with firearms.

On May 8, 1792, Congress passed "[a]n act more effectually to provide for the National Defence, by establishing an Uniform Militia throughout the United States" requiring:

[E]ach and every free able-bodied white male citizen of the respective States, resident therein, who is or shall be of age of eighteen years, and under the age of forty-five years (except as is herein after excepted) shall severally and respectively be enrolled in the militia ... [and] every citizen so enrolled and notified, shall, within six months thereafter, provide himself with a good musket or firelock, a sufficient bayonet and belt, two spare flints, and a knapsack, a pouch with a box therein to contain not less than twenty-four cartridges, suited to the bore of his musket or firelock, each cartridge to contain a proper quantity of powder and ball: or with a good rifle, knapsack, shot-pouch and powder-horn, twenty balls suited to the bore of his rifle, and a quarter of a pound of powder; and shall appear, so armed, accoutred and provided, when called out to exercise, or into service, except, that when called out on company days to exercise only, he may appear without a knapsack.

The act also gave specific instructions to domestic weapon manufacturers "that from and after five years from the passing of this act, muskets for arming the militia as herein required, shall be of bores sufficient for balls of the eighteenth part of a pound." In practice, private acquisition and maintenance of rifles and muskets meeting specifications and readily available for militia duty proved problematic; estimates of compliance ranged from 10 to 65 percent. Compliance with the enrollment provisions was also poor. In addition to the exemptions granted by the law for custom-house officers and their clerks, post-officers and stage drivers employed in the care and conveyance of U.S. mail, ferrymen, export inspectors, pilots, merchant mariners and those deployed at sea in active service; state legislatures granted numerous exemptions under Section 2 of the Act, including exemptions for: clergy, conscientious objectors, teachers, students, and jurors. Though a number of able-bodied white men remained available for service, many simply did not show up for militia duty. Penalties for failure to appear were enforced sporadically and selectively. None is mentioned in the legislation.

Scholarly commentary

Early commentary

In May 1788, the pseudonymous author "Federal Farmer" (his real identity is presumed to be either Richard Henry Lee or Melancton Smith) wrote in Additional Letters From The Federal Farmer #169 or Letter XVIII regarding the definition of a "militia":

A militia, when properly formed, are in fact the people themselves, and render regular troops in a great measure unnecessary.

In June 1788, George Mason addressed the Virginia Ratifying Convention regarding a "militia:"

A worthy member has asked, who are the militia, if they be not the people, of this country, and if we are not to be protected from the fate of the Germans, Prussians, &c. by our representation? I ask who are the militia? They consist now of the whole people, except a few public officers. But I cannot say who will be the militia of the future day. If that paper on the table gets no alteration, the militia of the future day may not consist of all classes, high and low, and rich and poor; but may be confined to the lower and middle classes of the people, granting exclusion to the higher classes of the people. If we should ever see that day, the most ignominious punishments and heavy fines may be expected. Under the present government all ranks of people are subject to militia duty.

In 1792, Tench Coxe made the following point in a commentary on the Second Amendment:

As civil rulers, not having their duty to the people duly before them, may attempt to tyrannize, and as the military forces which must be occasionally raised to defend our country, might pervert their power to the injury of their fellow citizens, the people are confirmed by the next article in their right to keep and bear their private arms.

The earliest published commentary on the Second Amendment by a major constitutional theorist was by St. George Tucker. He annotated a five-volume edition of Sir William Blackstone's Commentaries on the Laws of England, a critical legal reference for early American attorneys published in 1803. Tucker wrote:

Commentary since late 20th century

Until the late 20th century, there was little scholarly commentary of the Second Amendment. In the latter half of the 20th century, there was considerable debate over whether the Second Amendment protected an individual right or a collective right. The debate centered on whether the prefatory clause ("A well regulated militia being necessary to the security of a free State") declared the amendment's only purpose or merely announced a purpose to introduce the operative clause ("the right of the People to keep and bear arms shall not be infringed"). Scholars advanced three competing theoretical models for how the prefatory clause should be interpreted.

The first, known as the "states' rights" or "collective right" model, held that the Second Amendment does not apply to individuals; rather, it recognizes the right of each state to arm its militia. Under this approach, citizens "have no right to keep or bear arms, but the states have a collective right to have the National Guard". Advocates of collective rights models argued that the Second Amendment was written to prevent the federal government from disarming state militias, rather than to secure an individual right to possess firearms. Prior to 2001, every circuit court decision that interpreted the Second Amendment endorsed the "collective right" model. However, beginning with the Fifth Circuit's opinion United States v. Emerson in 2001, some circuit courts recognized that the Second Amendment protects an individual right to bear arms.

The second, known as the "sophisticated collective right model", held that the Second Amendment recognizes some limited individual right. However, this individual right could be exercised only by actively participating members of a functioning, organized state militia. Some scholars have argued that the "sophisticated collective rights model" is, in fact, the functional equivalent of the "collective rights model". Other commentators have observed that prior to Emerson, five circuit courts specifically endorsed the "sophisticated collective right model".

The third, known as the "standard model", held that the Second Amendment recognized the personal right of individuals to keep and bear arms. Supporters of this model argued that "although the first clause may describe a general purpose for the amendment, the second clause is controlling and therefore the amendment confers an individual right 'of the people' to keep and bear arms". Additionally, scholars who favored this model argued the "absence of founding-era militias mentioned in the Amendment's preamble does not render it a 'dead letter' because the preamble is a 'philosophical declaration' safeguarding militias and is but one of multiple 'civic purposes' for which the Amendment was enacted".

Meaning of "well regulated militia"

An early use of the phrase "well-regulated militia" may be found in Andrew Fletcher's 1698 A Discourse of Government with Relation to Militias, as well as the phrase "ordinary and ill-regulated militia". Fletcher meant "regular" in the sense of regular military, and advocated the universal conscription and regular training of men of fighting age. Jefferson thought well of Fletcher, commenting that "the political principles of that patriot were worthy the purest periods of the British constitution. They are those which were in vigour."

The term "regulated" means "disciplined" or "trained". In Heller, the U.S. Supreme Court stated that "[t]he adjective 'well-regulated' implies nothing more than the imposition of proper discipline and training."

In the year before the drafting of the Second Amendment, in Federalist No. 29 ("On the Militia"), Alexander Hamilton wrote the following about "organizing", "disciplining", "arming", and "training" of the militia as specified in the enumerated powers:

If a well regulated militia be the most natural defence of a free country, it ought certainly to be under the regulation and at the disposal of that body which is constituted the guardian of the national security ... confiding the regulation of the militia to the direction of the national authority ... [but] reserving to the states ... the authority of training the militia ... A tolerable expertness in military movements is a business that requires time and practice. It is not a day, or even a week, that will suffice for the attainment of it. To oblige the great body of the yeomanry, and of the other classes of the citizens, to be under arms for the purpose of going through military exercises and evolutions, as often as might be necessary to acquire the degree of perfection which would entitle them to the character of a well-regulated militia, would be a real grievance to the people, and a serious public inconvenience and loss ... Little more can reasonably be aimed at, with respect to the People at large, than to have them properly armed and equipped; and in order to see that this be not neglected, it will be necessary to assemble them once or twice in the course of a year.

Justice Scalia, writing for the Court in Heller:

In Nunn v. State, 1 Ga. 243, 251 (1846), the Georgia Supreme Court construed the Second Amendment as protecting the 'natural right of self-defence' and therefore struck down a ban on carrying pistols openly. Its opinion perfectly captured the way in which the operative clause of the Second Amendment furthers the purpose announced in the prefatory clause, in continuity with the English right". ... Nor is the right involved in this discussion less comprehensive or valuable: "The right of the people to bear arms shall not be infringed." The right of the whole people, old and young, men, women and boys, and not militia only, to keep and bear arms of every description, not such merely as are used by the militia, shall not be infringed, curtailed, or broken in upon, in the smallest degree; and all this for the important end to be attained: the rearing up and qualifying a well-regulated militia, so vitally necessary to the security of a free State. Our opinion is, that any law, State or Federal, is repugnant to the Constitution, and void, which contravenes this right, originally belonging to our forefathers, trampled under foot by Charles I. and his two wicked sons and successors, reestablished by the revolution of 1688, conveyed to this land of liberty by the colonists, and finally incorporated conspicuously in our own Magna Charta! And Lexington, Concord, Camden, River Raisin, Sandusky, and the laurel-crowned field of New Orleans, plead eloquently for this interpretation! And the acquisition of Texas may be considered the full fruits of this great constitutional right.

Meaning of "the right of the People"

Justice Antonin Scalia, writing for the majority in Heller, stated:

Nowhere else in the Constitution does a "right" attributed to "the people" refer to anything other than an individual right. What is more, in all six other provisions of the Constitution that mention "the people", the term unambiguously refers to all members of the political community, not an unspecified subset. This contrasts markedly with the phrase "the militia" in the prefatory clause. As we will describe below, the "militia" in colonial America consisted of a subset of "the people" – those who were male, able bodied, and within a certain age range. Reading the Second Amendment as protecting only the right to "keep and bear Arms" in an organized militia therefore fits poorly with the operative clause's description of the holder of that right as "the people".

Scalia further specifies who holds this right:

[The Second Amendment] surely elevates above all other interests the right of law-abiding, responsible citizens to use arms in defense of hearth and home.

An earlier case, United States v. Verdugo-Urquidez (1990), dealt with nonresident aliens and the Fourth Amendment, but led to a discussion of who are "the People" when referred to elsewhere in the Constitution:

The Second Amendment protects "the right of the people to keep and bear Arms", and the Ninth and Tenth Amendments provide that certain rights and powers are retained by and reserved to "the people" ... While this textual exegesis is by no means conclusive, it suggests that "the people" protected by the Fourth Amendment, and by the First and Second Amendments, and to whom rights and powers are reserved in the Ninth and Tenth Amendments, refers to a class of persons who are part of a national community or who have otherwise developed sufficient connection with this country to be considered part of that community.

According to the majority in Heller, there were several different reasons for this amendment, and protecting militias was only one of them; if protecting militias had been the only reason then the amendment could have instead referred to "the right of the militia to keep and bear arms" instead of "the right of the people to keep and bear arms".

Meaning of "keep and bear arms"

In Heller the majority rejected the view that the term "to bear arms" implies only the military use of arms:

Before addressing the verbs "keep" and "bear", we interpret their object: "Arms". The term was applied, then as now, to weapons that were not specifically designed for military use and were not employed in a military capacity. Thus, the most natural reading of "keep Arms" in the Second Amendment is to "have weapons". At the time of the founding, as now, to "bear" meant to "carry". In numerous instances, "bear arms" was unambiguously used to refer to the carrying of weapons outside of an organized militia. Nine state constitutional provisions written in the 18th century or the first two decades of the 19th, which enshrined a right of citizens "bear arms in defense of themselves and the state" again, in the most analogous linguistic context – that "bear arms" was not limited to the carrying of arms in a militia. The phrase "bear Arms" also had at the time of the founding an idiomatic meaning that was significantly different from its natural meaning: "to serve as a soldier, do military service, fight" or "to wage war". But it unequivocally bore that idiomatic meaning only when followed by the preposition "against". Every example given by petitioners' amici for the idiomatic meaning of "bear arms" from the founding period either includes the preposition "against" or is not clearly idiomatic. In any event, the meaning of "bear arms" that petitioners and Justice Stevens propose is not even the (sometimes) idiomatic meaning. Rather, they manufacture a hybrid definition, whereby "bear arms" connotes the actual carrying of arms (and therefore is not really an idiom) but only in the service of an organized militia. No dictionary has ever adopted that definition, and we have been apprised of no source that indicates that it carried that meaning at the time of the founding. Worse still, the phrase "keep and bear Arms" would be incoherent. The word "Arms" would have two different meanings at once: "weapons" (as the object of "keep") and (as the object of "bear") one-half of an idiom. It would be rather like saying "He filled and kicked the bucket" to mean "He filled the bucket and died."

In a dissent, joined by justices Souter, Ginsburg, and Breyer, Justice Stevens said:

The Amendment's text does justify a different limitation: the "right to keep and bear arms" protects only a right to possess and use firearms in connection with service in a state-organized militia. Had the Framers wished to expand the meaning of the phrase "bear arms" to encompass civilian possession and use, they could have done so by the addition of phrases such as "for the defense of themselves".

Analysis of grammar and syntax

The Second Amendment is viewed by scholars as divided into two clauses, a prefatory clause, and an operative clause.

The prefatory clause includes the text:

A well regulated Militia, being necessary to the security of a free State,

Followed by the operative clause:

the right of the people to keep and bear Arms, shall not be infringed.

Under the standard model, the prefatory clause is understood to be merely amplifying the operative clause. The prefatory clause was meant as a non-exclusive example – one of many justifications for the Second Amendment. This interpretation is consistent with the position that the Second Amendment protects an individual right.

Under the collective right models, the prefatory clause was considered essential as a pre-condition for the main clause. This interpretation claimed that this was a grammar structure common during the era the Second Amendment was written and that this grammar dictated that the Second Amendment protected a collective right to firearms to the extent necessary for militia duty. Many linguistic scholars reject this interpretation of the grammar and syntax, asserting, "...that the prefatory clause is neither internal nor conditional; instead, it's temporal and external, meaning the opening words introduce its context and purpose."

The comma between the word "Arms" and "shall" also has been involved in debate centered around the meaning and interpretation of this one comma between the two words. Some argue that "...long-standing British tradition minimized punctuation's effect on laws" and that therefore this comma has little significance on the real meaning of the Second Amendment.

The Second Amendment uses "passive voice" in its language as opposed to "active voice." Only the First Amendment to the United States Constitution uses "active voice" ("Congress shall make no law"). Debate around whom the Second Amendment applies to has also centered around this "passive voice" used in its wording. A Reason magazine analysis from January 2025 stated on the subject of the "passive" versus "active" voice used in the Second Amendment that:The Bill of Rights' passive voice consistently elevates one object: individual rights. As for the subject, the Framers could neither specify nor predict what or who could infringe upon said rights. Thus, the Constitution, especially following the 14th Amendment's ratification, safeguards these rights from an exhaustive catalog of unscrupulous subjects—namely, state actors (e.g., cops, Congress, presidents, judges, city councils, etc.) that could violate these freedoms.

Supreme Court cases

In the century following the ratification of the Bill of Rights, the intended meaning and application of the Second Amendment drew less interest than it does in modern times. The vast majority of regulation was done by states, and the first case law on weapons regulation dealt with state interpretations of the Second Amendment. A notable exception to this general rule was Houston v. Moore, 18 U.S. 1 (1820), where the U.S. Supreme Court mentioned the Second Amendment in an aside. In the Dred Scott decision (1857), the opinion of the court stated that if African Americans were considered U.S. citizens, "It would give to persons of the negro race, who were recognised as citizens in any one State of the Union, the right ... to keep and carry arms wherever they went."

State and federal courts historically have used two models to interpret the Second Amendment: the "individual rights" model, which holds that individuals hold the right to bear arms, and the "collective rights" model, which holds that the right is dependent on militia membership. The "collective rights" model has been rejected by the Supreme Court, in favor of the individual rights model, beginning with its District of Columbia v. Heller (2008) decision.

The Supreme Court's primary Second Amendment cases include United States v. Miller, (1939); District of Columbia v. Heller (2008); and McDonald v. Chicago (2010).

Heller and McDonald supported the individual rights model, under which the Second Amendment protects the right to keep and bear arms much as the First Amendment protects the right to free speech. Under this model, the militia is composed of members who supply their own arms and ammunition. This is generally recognized as the method by which militias have historically been armed, as the Supreme Court in Miller said:

The signification attributed to the term Militia appears from the debates in the Convention, the history and legislation of Colonies and States, and the writings of approved commentators. These show plainly enough that the Militia comprised all males physically capable of acting in concert for the common defense. 'A body of citizens enrolled for military discipline.' And further, that ordinarily when called for service these men were expected to appear bearing arms supplied by themselves and of the kind in common use at the time.

United States v. Cruikshank

In the Reconstruction Era case of United States v. Cruikshank, 92 U.S. 542 (1875), the defendants were white men who had killed more than sixty black people in what was known as the Colfax massacre and had been charged with conspiring to prevent blacks from exercising their right to bear arms. The Court dismissed the charges, holding that the Bill of Rights restricted Congress but not private individuals. The Court concluded, "[f]or their protection in its enjoyment, the people must look to the States."

The Court stated that "[t]he Second Amendment ... has no other effect than to restrict the powers of the national government ..." Likewise, the Court held that there was no state action in this case, and therefore the Fourteenth Amendment was not applicable:

The fourteenth amendment prohibits a State from depriving any person of life, liberty, or property, without due process of law; but this adds nothing to the rights of one citizen as against another.

Thus, the Court held a federal anti-Ku-Klux-Klan statute to be unconstitutional as applied in that case.

Presser v. Illinois

In Presser v. Illinois, 116 U.S. 252 (1886), Herman Presser headed a German-American paramilitary shooting organization and was arrested for leading a parade group of 400 men, training and drilling with military weapons with the declared intention to fight, through the streets of Chicago as a violation of Illinois law that prohibited public drilling and parading in military style without a permit from the governor.

At his trial, Presser argued that the State of Illinois had violated his Second Amendment rights. The Supreme Court reaffirmed Cruikshank, and also held that the Second Amendment prevented neither the States nor Congress from barring private militias that parade with arms; such a right "cannot be claimed as a right independent of law". This decision upheld the States' authority to regulate the militia and that citizens had no right to create their own militias or to own weapons for semi-military purposes. The Court however observed with respect to the reach of the Amendment on the national government and the federal states and the role of the people therin: "It is undoubtedly true that all citizens capable of bearing arms constitute the reserved military force or reserve militia of the United States as well as of the states, and, in view of this prerogative of the general government, as well as of its general powers, the states cannot, even laying the constitutional provision in question out of view, prohibit the people from keeping and bearing arms so as to deprive the United States of their rightful resource for maintaining the public security, and disable the people from performing their duty to the general government." In essence the court said: "A state cannot prohibit the people therein from keeping and bearing arms to an extent that would deprive the United States of the protection afforded by them as a reserve military force."

Miller v. Texas

In Miller v. Texas, 153 U.S. 535 (1894), Franklin Miller was convicted and sentenced to be executed for shooting a police officer to death with an illegally carried handgun in violation of Texas law. Miller sought to have his conviction overturned, claiming his Second Amendment rights were violated and that the Bill of Rights should be applied to state law. The Supreme Court ruled that the Second Amendment did not apply to state laws such as the Texas law, writing: "As the proceedings were conducted under the ordinary forms of criminal prosecutions there certainly was no denial of due process of law."

Robertson v. Baldwin

In Robertson v. Baldwin, 165 U.S. 275 (1897), the Supreme Court stated in dicta that "the right of the people to keep and bear arms (Art. II) is not infringed by laws prohibiting the carrying of concealed weapons."

United States v. Schwimmer

United States v. Schwimmer, 279 U.S. 644 (1929), concerned a pacifist applicant for naturalization who in the interview declared not to be willing to "take up arms personally" in defense of the United States. The Supreme Court cited the Second Amendment indirectly by declaring that the United States Constitution obliges citizens "to defend our government against all enemies whenever necessity arises is a fundamental principle of the Constitution" and by declaring further that the "common defense was one of the purposes for which the people ordained and established the Constitution."

United States v. Miller

In United States v. Miller, 307 U.S. 174 (1939), the Supreme Court rejected a Second Amendment challenge to the National Firearms Act prohibiting the interstate transportation of unregistered Title II weapons:

Jack Miller and Frank Layton "did unlawfully ... transport in interstate commerce from ... Claremore ... Oklahoma to ... Siloam Springs ... Arkansas a certain firearm ... a double barrel ... shotgun having a barrel less than 18 inches in length ... at the time of so transporting said firearm in interstate commerce ... not having registered said firearm as required by Section 1132d of Title 26, United States Code ... and not having in their possession a stamp-affixed written order ... as provided by Section 1132C ..."

In a unanimous opinion authored by Justice McReynolds, the Supreme Court stated "the objection that the Act usurps police power reserved to the States is plainly untenable." As the Court explained:

In the absence of any evidence tending to show that possession or use of a 'shotgun having a barrel of less than eighteen inches in length' at this time has some reasonable relationship to any preservation or efficiency of a well regulated militia, we cannot say that the Second Amendment guarantees the right to keep and bear such an instrument. Certainly it is not within judicial notice that this weapon is any part of the ordinary military equipment or that its use could contribute to the common defense.

Gun rights advocates claim that the Court in Miller ruled that the Second Amendment protected the right to keep arms that are part of "ordinary military equipment". They also claim that the Court did not consider the question of whether the sawed-off shotgun in the case would be an applicable weapon for personal defense, instead looking solely at the weapon's suitability for the "common defense". Law professor Andrew McClurg states, "The only certainty about Miller is that it failed to give either side a clear-cut victory. Most modern scholars recognize this fact."

District of Columbia v. Heller

According to the syllabus prepared by the U.S. Supreme Court Reporter of Decisions, in District of Columbia v. Heller, 554 U.S. 570 (2008), the Supreme Court held:

The Heller court also stated (Heller, 554 U.S. 570 (2008), at 632) its analysis should not be read to suggest "the invalidity of laws regulating the storage of firearms to prevent accidents."

The Supreme Court also defined the term arms used in the Second Amendment. "Arms" covered by the Second Amendment were defined in District of Columbia v. Heller to include "any thing that a man wears for his defence, or takes into his hands, or useth in wrath to cast at or strike another". 554 U. S., at 581." The Michigan Court of Appeals 2012 relied on Heller in the case People v. Yanna to state certain limitations on the right to keep and bear arms:

In some respects, these limitations are consistent with each other. However, they are not identical, and the United States Supreme Court neither fully harmonized them nor elevated one over another. First, the Court stated that "the Second Amendment does not protect those weapons not typically possessed by law-abiding citizens for lawful purposes." Id. at 625, 128 S.Ct. 2783. The Court further stated that "the sorts of weapons protected were those 'in common use at the time.'" Id. at 627, 128 S.Ct. 2783 (citation omitted). As noted, however, this included weapons that did not exist when the Second Amendment was enacted. Id. at 582, 128 S.Ct. 2783. Third, the Court referred to "the historical tradition of prohibiting the carrying of 'dangerous and unusual weapons.'" Id. at 627, 128 S.Ct. 2783 (citation omitted).

There are similar legal summaries of the Supreme Court's findings in Heller as the one quoted above. For example, the Illinois Supreme Court in People v. Aguilar (2013), summed up Heller's findings and reasoning:

In District of Columbia v. Heller, 554 U.S. 570 (2008), the Supreme Court undertook its first-ever "in-depth examination" of the second amendment's meaning Id. at 635. After a lengthy historical discussion, the Court ultimately concluded that the second amendment "guarantee[s] the individual right to possess and carry weapons in case of confrontation" (id. at 592); that "central to" this right is "the inherent right of self-defense" (id. at 628); that "the home" is "where the need for defense of self, family, and property is most acute" (id. at 628); and that, "above all other interests", the second amendment elevates "the right of law-abiding, responsible citizens to use arms in defense of hearth and home" (id. at 635). Based on this understanding, the Court held that a District of Columbia law banning handgun possession in the home violated the second amendment Id. at 635.

McDonald v. City of Chicago

On June 28, 2010, the Court in McDonald v. City of Chicago, 561 U.S. 742 (2010), held that the Second Amendment was incorporated, saying that "[i]t is clear that the Framers and ratifiers of the Fourteenth Amendment counted the right to keep and bear arms among those fundamental rights necessary to our system of ordered liberty." This means that the Court ruled that the Second Amendment limits state and local governments to the same extent that it limits the federal government. It also remanded a case regarding a Chicago handgun prohibition. Four of the five justices in the majority voted to do so by way of the Due Process Clause of the Fourteenth Amendment, while the fifth justice, Clarence Thomas, voted to do so through the amendment's Privileges or Immunities Clause. In United States v. Rahimi (2024) the Supreme Court stated "that the right to keep and bear arms is among the "fundamental rights necessary to our system of ordered liberty." McDonald v. Chicago, 561 U. S. 742, 778 (2010)."

Justice Thomas, in his concurring opinion, noted that the Privileges or Immunities Clause refers to "citizens" whereas the Due Process Clause refers more broadly to any "person", and therefore Thomas reserved the issue of non-citizens for later decision. After McDonald, many questions about the Second Amendment remain unsettled, such as whether non-citizens are protected through the Equal Protection Clause.

In People v. Aguilar (2013), the Illinois Supreme Court summed up the central Second Amendment findings in McDonald:

Two years later, in McDonald v. City of Chicago, 561 U.S. 742, ___, 130 S. Ct. 3020, 3050 (2010), the Supreme Court held that the second amendment right recognized in Heller is applicable to the states through the due process clause of the fourteenth amendment. In so holding, the Court reiterated that "the Second Amendment protects the right to keep and bear arms for the purpose of self-defense" (id. at ___, 130 S. Ct. at 3026); that "individual self-defense is 'the central component' of the Second Amendment right" (emphasis in original) (id. at ___, 130 S. Ct. at 3036 (quoting Heller, 554 U.S. at 599)); and that "[s]elf-defense is a basic right, recognized by many legal systems from ancient times to the present day" (id. at ___, 130 S. Ct. at 3036).

Caetano v. Massachusetts

On March 21, 2016, in a per curiam decision the Court vacated a Massachusetts Supreme Judicial Court decision upholding the conviction of a woman who carried a stun gun for self-defense. The Court reiterated that the Heller and McDonald decisions saying that "the Second Amendment extends, prima facie, to all instruments that constitute bearable arms, even those that were not in existence at the time of the founding", that "the Second Amendment right is fully applicable to the States", and that the protection is not restricted to "only those weapons useful in warfare". The term "bearable arms" was defined in District of Columbia v. Heller, 554 U.S. 570 (2008) and includes not only firearms, but any "[w]eapo[n] of offence" or "thing that a man wears for his defence, or takes into his hands", that is "carr[ied] ... for the purpose of offensive or defensive action". 554 U. S., at 581, 584 (internal quotation marks omitted)."

New York State Rifle & Pistol Association, Inc. v. City of New York, New York

The Court heard New York State Rifle & Pistol Association Inc. v. City of New York, New York on December 2, 2019, to decide whether a New York City ordinance that prevents the transport of guns, even if properly unloaded and locked in containers, from within city limits to outside of the city limits is unconstitutional. The New York Rifle & Pistol Association challenged the ordinance on the basis of the Second Amendment, the Dormant Commerce Clause, and the right to travel. However, as the city had changed its rule to allow transport while the case was under consideration by the Court, the Court ruled the case moot in April 2020, though it remanded the case so the lower courts could review the new rules under the petitioners new claims.

New York State Rifle & Pistol Association, Inc. v. Bruen

New York law prohibits the concealed carry of firearms without a permit. The issuance of such permits was previously at the discretion of state authorities, and permits were not issued absent 'proper cause'. The New York State Rifle & Pistol Association and two individuals who had been denied permits on the grounds that they lacked proper cause, challenged the licensing regime as a violation of the Second Amendment, with the District Court and the Second Circuit Court of Appeals ruling in favor of the state. The Supreme Court ruled on June 23, 2022, in a 6–3 decision that the New York law, as a "may-issue" regulation, was unconstitutional, affirming that public possession of firearms was a protected right under the Second Amendment. The majority stated that states may still regulate firearms through "shall-issue" regulations that use objective measures such as background checks. In its June 2024 United States v. Rahimi decision, the Court refined the Bruen test, stating that in comparing modern gun control laws to historic tradition, courts should use similar analogues and general principles rather than strict matches.

United States Courts of Appeals decisions before and after Heller

Before Heller

Until District of Columbia v. Heller (2008), United States v. Miller (1939) had been the only Supreme Court decision that "tested a congressional enactment against [the Second Amendment]". Miller did not directly mention either a collective or individual right, but for the 62-year period from Miller until the Fifth Circuit's decision in United States v. Emerson (2001), federal courts recognized only the collective right, with "courts increasingly referring to one another's holdings ... without engaging in any appreciably substantive legal analysis of the issue".

Emerson changed this by addressing the question in depth, with the Fifth Circuit determining that the Second Amendment protects an individual right. Subsequently, the Ninth Circuit conflicted with Emerson in Silveira v. Lockyer, and the D.C. Circuit supported Emerson in Parker v. District of Columbia. Parker evolved into District of Columbia v. Heller, in which the U.S. Supreme Court determined that the Second Amendment protects an individual right.

After Heller

Since Heller, the United States courts of appeals have ruled on many Second Amendment challenges to convictions and gun control laws.

Heller v. District of Columbia, Civil Action No. 08-1289 (RMU), No. 23., 25 – On March 26, 2010, the D.C. Circuit denied the follow-up appeal of Dick Heller who requested the court to overturn the new District of Columbia gun control ordinances newly enacted after the 2008 Heller ruling. The court refused to do so, stating that the firearms registration procedures, the prohibition on assault weapons, and the prohibition on large capacity ammunition feeding devices were found to not violate the Second Amendment. On September 18, 2015, the D.C. Circuit ruled that requiring gun owners to re-register a gun every three years, make a gun available for inspection or pass a test about firearms laws violated the Second Amendment, although the court upheld requirements that gun owners be fingerprinted, photographed, and complete a safety training course.

Wrenn v. District of Columbia, No. 16-7025 – On July 25, 2017, the D.C. Circuit ruled that a District of Columbia regulation that limited conceal-carry licenses only to those individuals who could demonstrate, to the satisfaction of the chief of police, that they have a "good reason" to carry a handgun in public was essentially designed to prevent the exercise of the right to bear arms by most District residents and so violated the Second Amendment by amounting to a complete prohibition on firearms possession.

United States v. Rene E., 583 F.3 d 8 (1st Cir. 2009 ) – On August 31, 2009, the First Circuit affirmed the conviction of a juvenile for the illegal possession of a handgun as a juvenile, under 18 U.S.C. § 922(x)(2)(A) and 18 U.S.C. § 5032, rejecting the defendant's argument that the federal law violated his Second Amendment rights under Heller. The court cited "the existence of a longstanding tradition of prohibiting juveniles from both receiving and possessing handguns" and observed "the federal ban on juvenile possession of handguns is part of a longstanding practice of prohibiting certain classes of individuals from possessing firearms – those whose possession poses a particular danger to the public."

Kachalsky v. County of Westchester, 11-3942 – On November 28, 2012, the Second Circuit upheld New York's may-issue concealed carry permit law, ruling that "the proper cause requirement is substantially related to New York's compelling interests in public safety and crime prevention."