In a move that blurs the line between trade policy and corporate targeting, President Trump threatened to bar Bombardier — a cornerstone of Canadian manufacturing — from the American market, sending its shares into decline. The threat, aimed at a single company rather than a sector or tariff category, marks a quieter but sharper evolution in how economic power is being wielded across the US-Canada relationship. For Bombardier and the thousands it employs, the uncertainty is not abstract; it is measured in stock tickers and contingency plans. The episode invites a broader question about whether