Trump removes Kristi Noem from Homeland Security post

WASHINGTON - President Donald Trump said he’s replacing Homeland Security Secretary Kristi Noem and will nominate in her place Oklahoma Republican Sen. Markwayne Mullin.

Trump made the announcement on social media on Thursday, two days after Noem faced a grilling on Capitol Hill from GOP members as well as Democrats.

Kristi Noem testifies before the House Judiciary Committee in the Rayburn House Office Building on March 04, 2026 in Washington, DC. The Department of Homeland Security has faced criticism over it's handling of immigration enforcement leaving the dep

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The Wall Street Journal was first to report that Trump planned to fire the secretary.

Trump fires Kristi Noem from DHS post

What they're saying:

"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," Trump said in a statement on his social media platform Truth Social.

Trump fires DHS Secretary Noem

President Trump announces that DHS Secretary Kristi Noem is being replaced by Sen. Markwayne Mullen (R-OK) effective on March 31. 

He continued: "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.’"

Later Noem acknowledged new new role on social media, stating, "Thank you @POTUS Trump for appointing me as the Special Envoy for the Shield of the Americas. @SecRubio and @SecWar are incredible leaders and I look forward to working with them closely to dismantle cartels that have poured drugs into our nation and killed our children and grandchildren."

She continued: "The Western Hemisphere is absolutely critical for U.S. security. In this new role, I will be able to build on the partnerships and national security expertise, I forged over the last 13 months as Secretary of Homeland Security. We have made historic accomplishments at the Department of Homeland Security to make America safe again: we delivered the MOST secure border in American history, 3 million illegal aliens have left the U.S., we have located 145,000 children, FEMA delivered disaster relief at a 100% faster rate, we ushered in the golden age of travel, saved the American taxpayer $13 billion and revitalized the U.S. Coast Guard."

Trump nominates Marwayne Mullin to replace Kristi Noem

Dig deeper:

Serving 10 years in the United States House of Representatives, and three in the Senate, Trump said Markwayne "has done a tremendous job representing the wonderful People of Oklahoma."

He continued: "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."

Voting in the Senate just after Trump's announcement, Mullin said he has "no idea" how quickly his nomination will move.

"The president and I are good friends. So we look forward to working closer with the White House, and obviously I’m gonna be over there a lot more," he said.

Noem fired after testifying on Capitol Hill

Big picture view:

Noem is the first Cabinet secretary to leave during Trump’s second term. Noem’s departure caps a tumultuous tenure overseeing immigration enforcement tactics that have been met with protests and lawsuits.

Noem has faced waves of criticism as she’s overseen Trump’s immigration crackdown, especially since the shooting deaths of two protesters in Minneapolis at the hands of immigration enforcement officers. The former South Dakota governor was also criticized over the way her department has spent billions of dollars allocated to it by Congress.

RELATED: Kristi Noem defends department's immigration enforcement tactics during Senate hearing

Aside from immigration, Noem also faced criticism — including from Republicans — over the pace of emergency funding approved through the Federal Emergency Management Agency and for the Trump administration’s response to disasters.

What's next:

Mullin would need to be confirmed by the Senate, but under a federal law governing executive branch vacancies, he would be allowed to serve as an acting Homeland Security secretary as long as his nomination is formally pending.