He was the first president to walk a picket line. And he crowed regularly about being the “most pro-union" president ever. But after four years as president, Joe Biden could not stop a growing working-class coalition, one that increasingly includes rank-and-file union members, from flocking to Donald Trump.

President Joe Biden and Vice President Kamala Harris now have something in common with Missouri Republican Sen. Josh Hawley: the endorsement from the Sheet Metal, Air, Rail and Transportation Workers union.