GOP Sen. Mullin challenges Teamsters boss to fight at Senate hearing: ‘Stand your butt up’

A Republican senator and the president of the Teamsters union nearly got in a fistfight in the middle of a Senate hearing.”You want to run your mouth. We can be two consenting adults, we can finish it here,” Sen. Markwayne Mullin told Sean O’Brien during a hearing on labor unions.The committee chair, Sen. Bernie Sanders, broke up the argument. “You’re a United States senator!” he shouted at Mullin.

A Republican senator and the president of the Teamsters union nearly got into a fistfight Tuesday in the middle of a Senate committee hearing, until Sen. Bernie Sanders stepped in and broke it up.

The exchange began when Sen. Markwayne Mullin, of Oklahoma, read a tweet that Teamsters President Sean O’Brien had posted in June.

“You want to run your mouth? We can be two consenting adults, we can finish it here,” Mullin said to O’Brien, who was testifying at a hearing on labor unions in America.

“OK, that’s fine, perfect,” O’Brien replied. “I’d love to do it right now.”

“Then stand your butt up then,” Mullin shot back.

“You stand your butt up,” O’Brien said.

Mullin, dressed in a white shirt and no jacket, then stood up and began to move toward O’Brien.

“No, no, sit down! Sit down! You’re a United States senator!” shouted Sanders, the Vermont independent and chairman of the Senate Health, Education, Labor, and Pensions Committee.

Mullin and O’Brien continued to trash-talk each other in the hearing room.

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“This is a hearing. And God knows the American people have enough contempt for Congress, let’s not make it worse,” Sanders said.

The feud between the senator and the union boss began months earlier.

Mullin told O’Brien to “shut your mouth” in a heated exchange during a prior hearing in March.

In a social media post later, in June, O’Brien ragged on Mullin as a “clown and a fraud.”

“Quit the tough guy act in these senate hearings. You know where to find me. Anyplace, Anytime cowboy,” O’Brien wrote on X.

Sean M. O’Brien, International Brotherhood of Teamsters General President, speaks during a Senate Health, Education, Labor and Pensions committee hearing titled “Standing Up Against Corporate Greed: How Unions are Improving the Lives of Working Families” on Capitol Hill in Washington, U.S., November 14, 2023. 

Elizabeth Frantz | Reuters

Days later, Mullin returned fire, saying he accepted the invitation and proposing a mixed martial arts fight for charity.

It was this exchange that prompted Mullin to challenge O’Brien to a fight in Tuesday’s hearing.

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