Markwayne Mullin: From MMA Fighter to Homeland Security Secretary

President Donald Trump has nominated Oklahoma Senator Markwayne Mullin to serve as the next Secretary of Homeland Security, replacing Kristi Noem. The appointment, announced on March 5, 2026, marks a significant shift for the department, bringing in a leader with a unique background that includes a career as a professional mixed martial arts fighter.

Who is Markwayne Mullin?

Markwayne Mullin, born July 26, 1977, in Tulsa, Oklahoma, brings a diverse professional history to the role of Homeland Security Secretary. Before entering politics, Mullin was an undefeated professional MMA fighter, holding a 5-0 record (USA Today). He briefly wrestled at Missouri Valley College before transitioning to the family plumbing business.

Mullin’s political career began in 2013, when he was elected to represent Oklahoma’s 2nd congressional district in the U.S. House of Representatives, serving until 2023. He then won a special election to the U.S. Senate, becoming the first Tribal citizen to serve in the Senate in nearly two decades (USA Today). He is an enrolled member of the Cherokee Nation (USA Today).

Trump’s Endorsement and Transition

President Trump praised Mullin as a “MAGA Warrior” and expressed confidence in his ability to lead the Department of Homeland Security (Times Now News). The transition will be effective March 31, 2026 (Times Now News). Outgoing Secretary Kristi Noem will be moving to a new security initiative called “The Shield of the Americas” (USA Today).

Controversies and Public Attention

Mullin has garnered public attention for his outspoken nature and willingness to engage in direct confrontation. In 2023, he challenged Teamsters President Sean O’Brien to a fight during a Senate hearing after a series of online exchanges (New York Post). The exchange involved heated rhetoric and a formal offer from Mullin to participate in an MMA fight for charity (New York Post).

During the hearing, Mullin questioned O’Brien about his past actions and affiliations, leading to a tense exchange that required intervention from Senator Bernie Sanders (New York Post).

Additional Background

Mullin was inducted into the Oklahoma Wrestling Hall of Fame in 2016 (USA Today). He is a married father of six children, including three adopted children (New York Post). Notably, he is the only current senator who does not hold at least a bachelor’s degree (New York Post).