Tensions erupted on Capitol Hill on Tuesday after a fistfight nearly broke out in a Senate hearing and a Republican congressman accused former House Speaker Kevin McCarthy of assaulting him.

At a Senate Health, Education, Labor and Pensions Committee hearing, an argument almost turned into a fistfight between GOP Sen. Markwayne Mullin of Oklahoma and the president of the Teamsters union, Sean O’Brien.

The exchange occurred when Mullin, a former MMA fighter, recalled an interaction he had with O’Brien in June on Twitter, now known as X.

Read the rest of the story at NBC News