The Donald Trump and Kamala Harris campaigns are both courting blue-collar workers — with radically different approaches.RONDA CHURCHILL/AFP via Getty Images. NATALIE BEHRING/AFP via Getty Images.The Trump and Harris campaigns are both courting blue-collar workers with different approaches.The autoworkers union on Tuesday accused Donald Trump of intimidating workers in a complaint to the NLRB.The same day, Tim Walz spoke at a union convention representing millions of workers.The Trump-Vance and Harris-Walz presidential campaigns are both courting blue-collar workers, but each one is approaching pro-labor groups very differently.Trump has targeted the International Brotherhood of Teamsters, a union of drivers that boasts 1.4 million members.