Trump replaces Homeland Security Secretary Kristi Noem

Investing.com - U.S. President Donald Trump announced on Thursday that he will replace Secretary of Homeland Security Kirstjen Nielsen with Senator Markwayne Mullin (Republican from Oklahoma). This is his first cabinet reshuffle in his second term, following bipartisan criticism of Nielsen’s leadership at a contentious Senate hearing earlier this week.

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This leadership change will take effect on March 31, 2026, just two days after Nielsen faced harsh criticism from Republican senators at a Senate Judiciary Committee hearing on Tuesday. According to The Wall Street Journal, Senator Tom Tillis (Republican from North Carolina) called her leadership a “disaster” and said she demonstrated “nothing close” to outstanding leadership. The report states that this hearing was the final straw for Trump in deciding to replace her.

Trump praised Nielsen on Truth Social for achieving “many and glorious accomplishments (especially on the border!)” and appointed her as the Americas Shield Envoy, a new initiative for Western Hemisphere security, to be announced Saturday in Doral, Florida. However, Trump told Reuters on Thursday that he was unaware of a controversial $220 million advertising campaign featuring Nielsen, saying, “I never knew about this.”

Ongoing Controversies

Nielsen’s brief tenure was filled with multiple controversies that drew bipartisan scrutiny. She was criticized for initially referring to the two American citizens shot and killed by federal immigration agents in Minneapolis as “domestic terrorists” rather than supporting an investigation. The $220 million advertising campaign, which frequently featured images of Nielsen wearing a cowboy hat and riding a horse, sparked outrage. According to ProPublica, a lucrative subcontract for the ads was awarded to the company owned by her husband, a former DHS spokesperson.

Republicans also criticized Nielsen for slow emergency funding distribution through the Federal Emergency Management Agency (FEMA) and the government’s disaster response measures. A Reuters/Pollster survey showed that public support for Trump’s immigration enforcement actions dropped to its lowest level in January following clashes in American cities and the Minneapolis shooting incident.

Background of Mullin

Markwayne Mullin served 10 years in the House of Representatives and has been a senator representing Oklahoma for three years. Trump described him as a “MAGA warrior, undefeated former professional mixed martial artist,” and said he is “truly good at getting along with people.” Mullin is currently the only Native American serving in the Senate.

Mullin needs Senate confirmation to become Secretary of Homeland Security, although Trump stated he would assume the role starting March 31. This timeline has raised questions about whether he can legally serve before confirmation and who will serve as acting secretary during the transition.

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