Patriot Brief

• Trump nominates Sen. Markwayne Mullin to replace Kristi Noem at DHS.

• Noem transitions to Western Hemisphere security envoy role under “Shield” initiative.

• Reshuffle underscores continued focus on border enforcement and immigration policy.

President Donald Trump announced Thursday that he intends to nominate Sen. Markwayne Mullin to serve as the next Secretary of United States Department of Homeland Security, replacing Kristi Noem in a significant reshuffling within his administration.

Trump shared the announcement on Truth Social, saying Noem would move to a newly created position focused on Western Hemisphere security while Mullin prepares to take over leadership of the department responsible for border security, immigration enforcement, and domestic safety.

According to Trump’s statement, Noem will become Special Envoy for what he called the “Shield of the Americas,” a regional security initiative the administration plans to formally announce in Doral, Florida.

“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,” Trump wrote. “I thank Kristi for her service at Homeland.”

Noem also confirmed the transition in a message posted to X, thanking the president for the new assignment and outlining her priorities moving forward.

She said the Western Hemisphere remains central to U.S. security interests and noted she plans to work closely with Secretary of State Marco Rubio and Defense Secretary Pete Hegseth on regional efforts aimed at disrupting drug cartels and strengthening partnerships with neighboring countries.

During her roughly year-long tenure leading Homeland Security, Noem highlighted several accomplishments she said helped reshape border enforcement and immigration policy. She pointed to what she described as the most secure border in American history, along with millions of illegal migrants leaving the country, large numbers of missing migrant children located, and major increases in drug interdictions.

The department also reported significant cost savings and operational changes, including improvements to disaster response times by the Federal Emergency Management Agency and new initiatives affecting travel and Coast Guard operations.

Trump’s choice of Mullin brings a political ally with an unusual résumé to the position. Before entering politics, Mullin was an undefeated mixed martial arts fighter and later served in the U.S. House before winning election to the Senate.

Trump praised Mullin’s record in Congress and said his background would bring energy to the department.

“As the only Native American in the Senate, Markwayne is a fantastic advocate for our Tribal Communities,” Trump wrote. “Markwayne will work tirelessly to keep our border secure, stop migrant crime and illegal drugs, and make America safe again.”

Mullin appeared surprised by the nomination when speaking to reporters at the Capitol shortly after the announcement. He said he had not been expecting the call from the president.

“I think I need to talk to my wife first,” Mullin joked when asked about the appointment.

The Oklahoma senator said he was enthusiastic about the opportunity but acknowledged that he and the president still needed to discuss the role further.

“I wasn’t expecting the call today, but I’m super excited,” Mullin said. “There’s a lot of work we can do to get Homeland Security working for the American people.”

If confirmed by the Senate, Mullin would take over leadership of a department that has been central to the administration’s immigration enforcement strategy.

During Noem’s time in office, the department oversaw a large-scale deportation effort and reported significant declines in illegal border crossings. Supporters within the administration have described the enforcement effort as one of the most aggressive in recent years.

At the same time, the department has faced criticism from Democratic lawmakers and immigration advocates over its policies and tactics, particularly during high-profile hearings in Congress earlier this week.

Those hearings included questions about a government-funded advertising campaign tied to a contractor with connections to individuals close to Noem. According to reports, Trump was frustrated by the controversy surrounding the contract and by comments made during the hearings suggesting he had approved the project.

Despite those disputes, many Republican lawmakers praised Noem’s performance during her time leading the department.

Rep. Clay Higgins said during one hearing that the secretary inherited a difficult situation and helped restore order at the southern border.

“An astonishing decrease in illegal crossings isn’t a coincidence,” Higgins said. “It’s leadership.”

For now, Noem is expected to transition to her new diplomatic role while Mullin begins the process of Senate confirmation. If confirmed, he would assume control of one of the federal government’s largest and most politically visible agencies at a time when border security and immigration remain major national issues.