The United Auto Workers endorsed Joe Biden for re-election today. “Donald Trump is a scab,” UAW President Shawn Fain said. “Donald Trump is a billionaire, and that’s who he represents. … Donald Trump stands against everything we stand for as a union – as a society.” In a remarkable split-screen moment last year, Biden joined striking UAW members on a picket line, while Trump made a by-invitation-only appearance at a non-union shop.