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Who is Markwayne Mullin, Trump’s nominee for Homeland Security secretary?

U.S. Sen. Markwayne Mullin, Oklahoma's junior senator, has been named the secretary of Homeland Security, replacing Kristi Noem.

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Massive news coming into our newsroom right now. Senator Mark Wayne Mullen has just been tapped by President Donald Trump to be the next Secretary of the Department of Homeland Security. Christine Nome is out effective March 30th first. That’s according to the president’s post on Truth Social just moments ago. This just came in. Senator Mark Wayne Mullen, of course, *** massive, massive ally to the president. The senator calls President Trump one of his personal friends. And so this is *** huge move, leaving the US Senate, which is Considered, of course, *** prime job in Washington DC to run the Department of Homeland Security. The president saying that Mark Wayne Mullen has done *** tremendous job representing the wonderful people of Oklahoma, saying that he will work tirelessly to keep our border secure, stop migrant crime, murderers, and other criminals from illegally entering our country. Big news. Mark Wayne Mullen leaving the Senate to become the Secretary of the Department of Homeland Security.

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Who is Sen. Markwayne Mullin, Trump’s nominee for Homeland Security secretary?

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Updated: 2:16 PM CST Mar 5, 2026

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U.S. Sen. Markwayne Mullin, Oklahoma’s junior senator, has been named the secretary of Homeland Security, replacing Kristi Noem.Mullin, a Republican and ally of President Donald Trump, will take the position on March 31, according to Trump on Truth Social. Trump announced that Noem will be moving from her position as secretary to a role with the “Special Envoy for the Shields of Americas,” a new security initiative in the Western Hemisphere.Mullin was sworn into the Senate in January of 2023. He previously served in the U.S. House of Representatives, representing Oklahoma’s 2nd Congressional District for 10 years.Oklahoma’s junior senator grew up in Westville, where his family founded Mullin Plumbing. He took over the business from his father before entering the world of politics.He is also a member of the Cherokee Nation.Mullin has made headlines during his time on Capitol Hill, including most recently during Trump’s State of the Union address, when he tried to grab a sign from Rep. Al Green, a Democrat from Texas.During his first year in the Senate, Mullin also made headlines after a heated exchange with Sean O’Brien, the general president of the International Brotherhood of Teamsters, during a committee hearing.Video below: Mullin appears to try to fight Teamster leader during hearing”You want to run your mouth. We can be two consenting adults. We can finish it here,” Mullin said to O’Brien during the 2023 confrontation.Mullin is also a former Mixed Martial Arts fighter, and he was inducted into the Oklahoma Wrestling Hall of Fame in 2016.

U.S. Sen. Markwayne Mullin, Oklahoma’s junior senator, has been named the secretary of Homeland Security, replacing Kristi Noem.

Mullin, a Republican and ally of President Donald Trump, will take the position on March 31, according to Trump on Truth Social. Trump announced that Noem will be moving from her position as secretary to a role with the “Special Envoy for the Shields of Americas,” a new security initiative in the Western Hemisphere.

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Mullin was sworn into the Senate in January of 2023. He previously served in the U.S. House of Representatives, representing Oklahoma’s 2nd Congressional District for 10 years.

Oklahoma’s junior senator grew up in Westville, where his family founded Mullin Plumbing. He took over the business from his father before entering the world of politics.

He is also a member of the Cherokee Nation.

Mullin has made headlines during his time on Capitol Hill, including most recently during Trump’s State of the Union address, when he tried to grab a sign from Rep. Al Green, a Democrat from Texas.

During his first year in the Senate, Mullin also made headlines after a heated exchange with Sean O’Brien, the general president of the International Brotherhood of Teamsters, during a committee hearing.

Video below: Mullin appears to try to fight Teamster leader during hearing

“You want to run your mouth. We can be two consenting adults. We can finish it here,” Mullin said to O’Brien during the 2023 confrontation.

Mullin is also a former Mixed Martial Arts fighter, and he was inducted into the Oklahoma Wrestling Hall of Fame in 2016.

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