Trump Fires Kristi Noem, Announces Markwayne Mullin Will Replace Her

WASHINGTON — President Donald Trump announced Thursday that he fired Homeland Security Secretary Kristi Noem and will nominate Republican Sen. Markwayne Mullin to replace her, effective March 31, 2026. Trump said Noem will become Special Envoy for The Shield of the Americas, a Western Hemisphere security initiative set to be unveiled Saturday in Doral, Florida. Noem faced bipartisan criticism and intense questioning this week on Capitol Hill over immigration enforcement, department spending and deadly enforcement operations. Deputy Secretary Troy Edgar will immediately lead the department during the transition while Mullin seeks Senate confirmation. Based on 8 articles reviewed and supporting research.