Republican Sen. Markwayne Mullin of Oklahoma told a witness to “shut your mouth” during a heated exchange at a Senate hearing on Wednesday.
The witness, general president of the International Brotherhood of Teamsters Sean O’Brien, went toe-to-toe with Mullin at the hearing before the Senate Health, Labor, Education and Pensions Committee. The panel’s chairman, Vermont independent Sen. Bernie Sanders, had to intervene multiple times to get the questioning back on track. #cnn #News