GOP Sen. Markwayne Mullin challenged a union boss to a MMA fight for charity. "An attention-seeking union Teamster boss is trying to be punchy after our Senate hearing. MMA fight for charity of our choice," Mullin wrote on his official Twitter account. An attention-seeking union Teamster boss is trying to be punchy after our Senate hearing. MMA fight for charity of our choice.

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Persons: Sen, Markwayne Mullin, Sean O'Brien, O'Brien, Mullin, —, Republican Sen, — Markwayne Mullin, James P, Hoffa, Jimmy Hoffa, Michael Avenatti, Avenatti, Stormy Daniels, Donald Trump Jr, Bernie Sanders, Sanders Organizations: Service, Republican, Oklahoma, Monday, Teamster Union, National Wrestling Hall of Fame, Teamsters, Health, Education, Labor, Pensions, Tulsa World Locations: Tulsa, Tulsa , Oklahoma, Oklahoma