Biden administration
In February 2021, after Trump lost reelection, the Heritage Foundation hired three former Trump administration officials, Ken Cuccinelli, Mark A. Morgan, and Chad Wolf, who held various roles in immigration-related functions in the Trump administration. Cuccinelli and Wolf authored several publications in 2021 before leaving the foundation.
At the same time, Heritage also hired former U.S. vice president Mike Pence as a distinguished visiting fellow. The following month, in March 2021, Pence authored an op-ed column, which made false claims of fraud in the 2020 presidential election, including numerous false claims about the For the People Act, a Democrat-supported bill designed to expand voting rights. Pence's false claims drew criticism and corrections from multiple media outlets and fact-checking organizations. Pence left the foundation in 2022.
The foundation's positions and management under Kay Coles James drew criticism from conservatives and Trump allies, which intensified in 2020 and 2021. "In the early days of the pandemic in spring 2020, Heritage leadership under James rejected an article from one of its scholars denouncing government restrictions, two people with knowledge of the matter said. The foundation's offices stayed closed for about three months, and signs urging masking became something of a joke for many conservatives who mocked the concept," The Washington Post reported in February 2022. Conservatives also began commenting publicly that the Heritage Foundation had lost the significant intellectual and political clout that led to the foundation's ascent as a global and national political and policy force in the 1980s and 1990s. Think-tank leader and commentator Avik Roy told The Washington Post, "People do not walk around in fear of the Heritage Foundation the way they did 10 years ago". In March 2021, in response to mounting criticism of her leadership of the foundation, James and executive vice president Kim Holmes resigned from the foundation.
In October 2021, the Heritage Foundation announced that Kevin Roberts, who previously led a state-based think tank, Texas Public Policy Foundation and was a member of Texas governor Greg Abbott's COVID-19 task force, would replace James as the foundation's new president. According to the foundation's filing with the Internal Revenue Service, Roberts was compensated $953,920 annually as of 2023.
In May 2022, the Heritage Foundation began opposing military aid to Ukraine designed to repel Russia's invasion of the nation, which the foundation previously supported. Following the reversal of its position on military aid to Ukraine, the foundation claimed, "Ukraine Aid Package Puts America Last". In September 2022, the foundation's foreign policy director said the foundation ordered him to retract his earlier statements supporting aid to Ukraine; he subsequently left the organization. In August 2023, Thomas Spoehr, the foundation's Center for National Defense director, resigned his position over the dramatic policy change.
In September 2022, Luke Coffey, then director of the Heritage Foundation's Douglas and Sarah Allison Center for Foreign Policy, said he was "required by management to remove a Twitter post condemning the January 6 Capitol riots."
In March 2023, the Heritage Foundation established a cooperative relationship with the Danube Institute, a Budapest-based state-funded think tank founded in 2013.
In January 2024, Roberts told journalist Lulu Garcia-Navarro in an interview that he sees Heritage's role as "institutionalizing Trumpism". Garcia-Navarro summarized this role as "leading Project 2025...[to] consolidate power in the executive branch, dismantle federal agencies and recruit and vet government employees to free the next Republican president from a system...stacked against conservative power." The Economist reported the following month that Heritage was incrementally embracing national conservatism as its guiding ideology.
In May 2024, the Heritage Foundation donated $100,000 to the American Accountability Foundation (AAF) for the purpose of AAF developing a website that features personal information of career civil servants, who AAF describes as "America's Most Subversive Immigration Bureaucrats". The website publicly features their photographs, small-dollar political donations, and screenshots of their personal social media accounts.
In July 2024, according to the Associated Press, the foundation had promoted a conspiracy theory that Biden may attempt to use force to remain in office following the 2024 election if he lost, which ultimately never happened since Biden withdrew from the election nine days later, on July 21, and Trump ultimately defeated Kamala Harris in the general election and peacefully assumed the presidency in January 2025. The same month, in July 2024, The Washington Post reported that, four months before the general election was even held, Heritage had already declared the election illegitimate. In September 2024, The New York Times reported that the Heritage Foundation used deceptive videos during the 2024 US election campaign to falsely claim that noncitizen voting posed a major threat.