WASHINGTON (AP) — President Joe Biden has picked up the endorsement of the United Auto Workers. The Democratic president addressed the powerful union’s political convention in Washington on Wednesday. He told a cheering crowd, “I’m honored to have your back and you have mine.” Biden is pushing to sway blue-collar workers his way in critical auto-making swing states such as Michigan and Wisconsin. Biden is hoping to cut into the advantage Republican former President Donald Trump has enjoyed with white voters who don’t have a college degree. Labor experts say the UAW usually endorses candidates later as it contains a mix of Democratic, Republican and unaffiliated voters.