President Donald Trump meets with Sen. Markwayne Mullin (R-OK), Sen. Cindy Hyde-Smith (R-MS), and Sen. Tim Sheehy (R-MN) in the Oval Office, Friday, November 7, 2025. (Official White House Photo by Molly Riley)
The U.S. Senate confirmed Markwayne Mullin as the next secretary of Homeland Security on March 23, as the agency continues to grapple with what lawmakers have described as a “never-ending” funding standoff, with Democrats attempting to withhold funding from one of the nation’s largest and most costly agencies.
Mullin — a Republican senator from Oklahoma, former mixed martial arts fighter, and plumbing business owner — was confirmed in a 54–45 vote. Two Democrats — U.S. Sens. John Fetterman (D-Pa.) and Martin Heinrich (D-N.M.) — sided with Republicans in supporting his confirmation.
The new agency head is expected to follow the policy direction set by President Donald Trump, emphasizing stricter immigration enforcement. This includes proposals to support immigration agents at polling sites and to cut funding to so-called “sanctuary cities.”
Mullin replaces Kristi Noem, who was fired earlier this month following a widely scrutinized 2-day congressional hearing on Capitol Hill.
During the hearing, Noem faced intense questioning over her response to several crises, including the fatal shooting of two American citizens in Minneapolis by U.S. Immigration and Customs Enforcement agents, a $220 million border security advertising campaign that featured her on horseback near Mount Rushmore amid one of the largest federal workforce reductions in U.S. history, and the federal response to major natural disasters such as the July 2025 Texas floods and Hurricane Helene in 2024.
Noem had previously drawn criticism for a series of policy decisions in South Dakota that broadly focused on restricting the rights of LGBTQ individuals. In 2023, she signed House Bill 1080, banning gender-affirming medical care for transgender minors. She also signed legislation and executive orders restricting trans athletes’ participation in women’s sports, as well as the state’s “Religious Freedom Restoration Act,” which critics argued enabled discrimination against LGBTQ individuals. Additionally, the state canceled contracts related to LGBTQ support services — including suicide prevention and health care navigation programs‚ and later agreed to a $300,000 settlement with trans advocacy group, The Transformation Project.
Despite her removal from DHS, Noem will remain in the Trump-Vance administration as a special envoy for the “Shield of the Americas,” an initiative aimed at promoting U.S. influence in the Western Hemisphere, including efforts to counter cartel networks, reduce Chinese influence, and manage migration.
The new head of DHS has served in Congress since 2013, in both houses of the federal legislature. While in the Senate and a member of the Health, Education, Labor, and Pensions (HELP) Committee, Mullin has been a vocal critic of policies aimed at expanding LGBTQ inclusion. He led a group of lawmakers in urging the Administration for Community Living to reverse a rule requiring states to prioritize Older Americans Act services based on sexual orientation and gender identity, arguing the policy could have unintended consequences.
Mullin also makes history as the first Native American — and a citizen of the Cherokee Nation — to lead the Department of Homeland Security. He was also among the 147 Republicans who voted to overturn the 2020 presidential election results despite no evidence of widespread fraud, and was present in the U.S. House of Representatives chamber on Jan. 6.
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