Fox NewsSen. Markwayne Mullin (R-OK) said he was nobly representing “Oklahoma values” when he challenged a union boss to a fight Tuesday. A meeting of the Senate HELP Committee went off the rails when Mullin challenged Teamsters President Sean O’Brien to make good on an earlier online beef between the pair. Committee chair Bernie Sanders (I-VT) shut down the looming melee, reminding Mullin that he’s a “United States senator.” Speaking about the incident with Mullin on Fox News on Tuesday night,