Vermont Senator Bernie Sanders found himself intervening in a fight that was about to break out during a Senate hearing on Tuesday (November 14).

During a Senate Health, Education, Labor and Pensions Committee hearing, GOP Sen. Markwayne Mullin of Oklahoma challenged the president of the Teamsters union, Sean O’Brien, to a fight. Things got heated between the two men while they rehashed a back-and-forth that began on X in June.