Secretary of Homeland Security Kristi Noem testifies before the House Judiciary Committee in the Rayburn House Office Building on March 04, 2026 in Washington, DC.Heather Diehl/Getty
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Kristi Noem’s time as Department of Homeland Security secretary is coming to an end, according to a Truth Social post from President Donald Trump. Sen. Markwayne Mullin, a Republican from Oklahoma who is a former Mixed Martial Arts fighter, will replace her.
“A MAGA Warrior, and former undefeated professional MMA fighter, Markwayne truly gets along well with people, and knows the Wisdom and Courage required to Advance our America First Agenda,” Trump wrote, adding that Noem “has served us well, and has had numerous and spectacular results (especially on the Border!)”
It’s unclear if or when Mullin will get Senate approval, as Congress remains locked on funding the agency he’s named to lead.
Noem will move into a new role, according to the president, as “Special Envoy for The Shield of the Americas” a “new Security Initiative in the Western Hemisphere” the administration plans to announce Saturday. Her removal will be effective March 31.
Since Noem was confirmed in January of 2025, her tenure has been defined by a violent mass-detention and deportation campaign, which included Immigration and Customs Enforcement’s deadliest year in two decades in 2025, two US citizens being shot and killed—who Noem painted as domestic terrorists—and the repeated use of chemical weapons on protestors and minors by DHS agents.
Her replacement, Mullin, is the only sitting Native American senator. He describes himself as a “Christian. Husband. Father of 6” in his social media profiles and repeatedly posts in support of DHS and ICE’s actions.
On January 7, hours after DHS confirmed that an agent had shot and killed a woman in Minneapolis—who would later be identified as Renée Good—Mullin posted a message defending agents. “ICE agents aren’t Disney villains. They’re our neighbors, friends, and loved ones,” he wrote. “These immigration and customs enforcement officers are red-blooded American patriots doing a tough job to keep our nation safe.”
