In the shadow of an existential trade threat, Bombardier has chosen expansion over retreat — announcing 500 new American jobs even as the Trump administration weighs banning the Canadian aerospace firm from the very market it seeks to grow. The move arrives amid escalating tariff exchanges between Washington and Ottawa, and has drawn an unlikely chorus of Republican defenders, suggesting that the company's American roots run deep enough to complicate any effort to uproot them. It is a wager on the power of economic presence to outlast political volatility — a quiet argument that jobs, once pro