Aaaaaand, she's gone... Moments ago Bloomberg reported that Trump has named Sen. Markwayne Mullin (R-OK) to replace Noem. 

Trump posted the following on Truth Social:

"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 (DHS), effective March 31, 2026. 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. I thank Kristi for her service at 'Homeland.'

Serving 10 years in the United States House of Representatives, and 3 in the Senate, Markwayne has done a tremendous job representing the wonderful People of Oklahoma, where I won all 77 out of 77 Counties — in 2016, 2020, and 2024! 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. As the only Native American in the Senate, Markwayne is a fantastic advocate for our incredible Tribal Communities. Markwayne will work tirelessly to Keep our Border Secure, Stop Migrant Crime, Murderers, and other Criminals from illegally entering our Country, End the Scourge of Illegal Drugs and, MAKE AMERICA SAFE AGAIN. Markwayne will make a spectacular Secretary of Homeland Security. Thank you for your attention to this matter!

PRESIDENT DONALD J. TRUMP"

Developing...

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President Donald Trump is preparing to fire Homeland Security Secretary Kristi Noem amid growing frustration over her self-promotional leadership style and bruising congressional testimony this week, according to multiple reports.

Sen. John Kennedy (R-LA) described Trump as "pissed," according to NBC News.