‘Shut your mouth’: Republican senator clashes with Teamsters chief – video

In an aggressive confrontation at a Senate health, education, labor and pensions committee, Markwayne Mullin, a Republican senator, clashed with Sean O'Brien, president of the Teamsters, a US labor union. 'You need to shut your mouth,' said Mullin after a testy interaction in which Mullin asked the union head what he did to earn his salary. 'You're out of line,' O'Brien retorted. Bernie Sanders attempted to mediate between the two men, to little avail

• Shut your mouth': Republican senator and Teamsters leader in fiery clash