Trump Threatens 100 % Tariffs After Carney-Xi EV Tariff Swap

This spat rhymes with the 1930–33 Smoot-Hawley cascade, when U.S. tariff hikes provoked counter-alignments and Ottawa sought Commonwealth preference at the 1932 Ottawa Conference. Then—as now—mid-sized economies looked for alternative markets when Washington turned protectionist. The Carney-Xi mini-deal exposes two structural trends: (1) the weaponisation of deeply integrated North American supply chains—autos cross the border up to six times—so even a limited tariff tweak reverberates; and (2) the tightening U.S. use of treaty clauses (USMCA Art. 32.10) to fence partners off from China, mirroring how the 1983 Caribbean Basin Initiative conditioned access on alignment with U.S. geopolitical aims. Whether this moment matters a century from now will depend on whether it accelerates the fracturing of the post-1994 NAFTA production platform; if Canada decisively pivots east, it could mark the beginning of a long realignment akin to Britain’s 1973 entry into the EEC, reshaping continental trade architecture for decades. Conversely, if Trump’s threat proves another bluff—he has reversed several since 2025—the episode may register as just another punctuation mark in the gradual drift toward a more regionalised, tariff-fragmented world economy.