Oklahoma Sen. Markwayne Mullin Faces Backyard Fight Challenge from Teamsters Leader

Oklahoma Sen. Markwayne Mullin revealed in a video that Teamsters President Sean O'Brien challenged him to a backyard fight prior to their recent public exchange during a Senate hearing. This comes after Mullin had previously challenged O'Brien to a fight in response to a social media post. O'Brien never publicly responded to the challenge, but Mullin claimed that O'Brien later called him and suggested fighting in a backyard. The response from O'Brien is unknown.