The IG review comes after hundreds of DHS staff received mandatory reassignments, in some cases to support the Trump administration's immigration crackdown.
FILE - The Homeland Security Department headquarters in northwest Washington, on June 5, 2015. The Department of Homeland Security says the U.S. faces a "heightened threat environment" with the approach of the holidays. (AP Photo/Susan Walsh, File)
FILE - The Theodore Roosevelt Building, location of the U.S. Office of Personnel Management, on Feb. 13, 2024, in Washington. The government's chief human resources agency has issued a new rule making it harder to fire thousands of federal employees. Advocates hope the rule will head off former President Donald Trump's promises to radically remake the workforce along ideological lines if he wins back the White House in November. (AP Photo/Mark Schiefelbein, File)