On Monday night, after the triumphant entrance of former president and GOP presidential nominee Donald Trump, Teamsters Union general president Sean O’Brien addressed the Republican National Convention. “I refuse to keep doing the same things my predecessors did,” O’Brien said. “Today, the Teamsters are here to say: ‘We are not beholden to anyone or any party.’” As president of the 1.3 million member union, O’Brien has proved to be willing to work with Republicans even as the rest of the labor movement has rallied around Democrats.