Al Gore pandered, embarrassingly, to unions but still lost. Lots of Trump support among the dues-paying members.
Al Gore may have pandered to some unions, but threatened the jobs of many union members with his “eco-bullsh!t” - and it cost him his home state of Tennessee (as well as BJ Clinton’s home state of Arkansas).
Trumka is a Marxist a-hole. He and his gang will support the Rats no matter what.