The United Auto Workers union endorsed President Joe Biden on Wednesday. “We need to know who’s gonna put up and who’s gonna shut up. And going even further, we need to know who’s gonna stand up with us,” said UAW President Shawn Fain in front of a crowd of union workers. Mr. Biden, who calls himself the “most pro-union president in history,” delighted striking U.A.W. workers but angered auto industry executives when he appeared on a picket line with workers last fall. On Wednesday, he appeared in front of a national conference of autoworkers to tell them that he had been proud to do it. “Let me tell you something I learned a long time ago,” Mr. Biden said. “If I’m gonna be in a fight, I want to be in a fight with you, the U.A.W.” 🎥: cspan #uaw #unitedautoworkers #presidentjoebiden #shawnfain #endorsement #election