Article snippet: Joe Biden launched his presidential campaign with an appeal to Rust Belt workers who helped Donald Trump squeeze out victories in Pennsylvania and the upper Midwest, telling an audience in Pittsburgh Monday that they hold the key to the White House in 2020. Biden’s kickoff rally for his campaign for the Democratic nomination was held in Pittsburgh in an attempt to highlight what his team sees as an edge he’d have over other Democrats in a match-up against Trump. The former vice president spoke at Teamsters Local 249’s hall. While that union is not yet endorsing any candidate, there have been clear signs of organized labor support for Biden, including an endorsement Monday from the International Association of Fire Fighters. Trump seized on the union’s endorsement Monday with an effort to divide union members from their leaders. “I’ll never get the support of Dues Crazy union leadership, those people who rip-off their membership with ridiculously high dues, medical and other expenses while being paid a fortune,” he tweeted. “But the members love Trump. They look at our record economy, tax & reg cuts, military etc. WIN!” Biden responded with a defense of unions, tweeting barely an hour after Trump: “I’m sick of this President badmouthing unions. Labor built the middle class in this country. Minimum wage, overtime pay, the 40-hour week: they exist for all of us because unions fought for those rights. We need a President who honors them and their work.” Tr... Link to the full article to read more