Mexico–United States border.
international border between the two countries in North America
DHS Gets Pentagon OK To Test ‘Heat Rays’ For Use At Southern Border
The Department of War has officially authorized the Department of Homeland Security to test a military-grade heat ray for use in future operations at the U.S.-Mexico border.
Politics · 1 source · Oct 21, 2026Read it
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About Mexico–United States border
The international boundary separating Mexico and United States extends from the Pacific Ocean to the Gulf of Mexico. The border traverses a variety of terrains, ranging from urban areas to deserts. It is the most frequently crossed border in the world, with approximately 350 million documented crossings annually. Illegal crossing of the border to enter the United States has caused the Mexico–United States border crisis. It is one of two international borders that the United States has, the other being the northern Canada–United States border; Mexico has two other borders: with Belize and with Guatemala.
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