Trump replaces Kristi Noem with Markwayne Mullin at DHS

President Donald Trump announced Thursday that he is replacing Homeland Security Secretary Kristi Noem with Oklahoma Senator Markwayne Mullin, effective March 31, 2026. The shakeup comes following a turbulent week of congressional oversight hearings where Noem faced bipartisan criticism over the deaths of U.S. citizens during immigration operations and reports regarding her personal conduct. In a statement on Truth Social, the President noted that Noem will transition to a new role as Special Envoy for "the Shield of the Americas," a security initiative set to launch this weekend in Doral, Florida. Senator Mullin, a staunch ally of the administration, will now lead the department tasked with overseeing the President's mass deportation agenda.