Trump's 50 percent tariff threat on Canadian cars and parts exposes the raw reality that decades of lopsided trade have hollowed out American manufacturing while Canada and others pocket the gains. Carmakers' quiet response shows they grasp the leverage at stake and see no future in defending deals that prioritize foreign access over U.S. workers. This policy matters because it rejects the bipartisan habit of treating trade deficits as inevitable rather than correctable failures of will. The Constitution grants Congress power to regulate foreign commerce precisely to protect the nation's economic independence, not to outsource it through endless multilateral arrangements. Reciprocal tariffs enforce the level playing field that genuine free markets require, preventing one-sided exploitation that weakens domestic industry and sovereignty alike. Limited government begins with refusing to subsidize foreign advantage at the expense of American prosperity. America First trade policy restores the leverage the Founders expected when they rejected colonial-style dependence.