Sen. Markwayne Mullin (R-Okla.) nearly came to blows Tuesday with Teamsters general president Sean O’Brien, who has been trash-talking the lawmaker for months on social media. Mullin began his remarks during a testy Senate Health, Education, Labor and Pensions Committee hearing by reading off a series of mean tweets and other taunts from O’Brien, who challenged him to a fight … [Read more...]