At first glance, President-elect Donald Trump’s pick of one-term congresswoman Lori Chavez-DeRemer to serve as Labor secretary is mystifying. The former congresswoman seemingly isn’t qualified for the position; she lacks relevant experience and, unlike many Trump supporters, hasn’t even been a union member. The pick makes more sense, however, as Trump’s concession to International Brotherhood of Teamsters (IBT) general president Sean O’Brien for his agreeing to...