During the 2024 Republican National Convention in Milwaukee, one of the more unlikely speakers was Teamsters President Sean O’Brien. O’Brien, unlike most of the speakers, didn’t endorse GOP presidential nominee Donald Trump but rather, spoke in general terms about how important the labor movement is to U.S. workers. O’Brien’s appearance at that convention drew a lot of criticism from liberals and progressives, who emphasized that the Republican Party — including Trump — has a very anti-union record. READ MORE: George Conway: Trump’s now the only one ‘the issue of cognitive decline’ applies to …