President Trump moved Kristi Noem, the Homeland Security secretary, to a new diplomatic post. He selected Markwayne Mullin, the senator from Oklahoma, to head the Department of Homeland Security.
President Announces Cabinet Changes
Donald Trump, the president, made the announcement on Thursday through a post on Truth Social. He chose Mullin for the top job. The appointment takes effect March 31.Trump created a special envoy role for Noem. He tied the position to a new security effort across the Western Hemisphere.
Trump Praises Noem Before Reassignment
Donald Trump, the president, praised Noem for her service. He noted strong results on the border. Trump stated, “The current Secretary, Kristi Noem, who has served us well, and has had numerous and spectacular results especially on the Border, will be moving to be Special Envoy for The Shield of the Americas, our new Security Initiative in the Western Hemisphere we are announcing on Saturday in Doral, Florida.”
Mullin Receives Nomination
Additionally, Donald Trump, the president, spoke highly of Mullin. He called the lawmaker a strong fit for the America First agenda. Trump said, “I am pleased to announce that the Highly Respected United States Senator from the Great State of Oklahoma, Markwayne Mullin, will become the United States Secretary of Homeland Security, effective March 31, 2026.”
Dispute Over Ad Campaign Triggers Shift
However, sources revealed that Donald Trump, the president, grew unhappy with Noem. This tension rose after Noem told senators that he had approved a $220 million ad campaign. The campaign urged undocumented immigrants in the United States to self-deport. Aides later suggested that Trump had not signed off on the effort. CBS News correspondent Nancy Cordes reported the details.
Security Initiative Set For Announcement
Meanwhile, Donald Trump, the president, said he would reveal the new Western Hemisphere security initiative on Saturday in Florida. He connected Noem’s envoy role directly to the program named The Shield of the Americas. The Senate still needs to confirm Mullin for the Homeland Security position. Officials prepared for the formal launch of the initiative that weekend.



