For investors, the immediate question is whether the 30-day negotiation window produces a de-escalation or a new round of retaliation. Canada has not yet specified its response, but Carney warned that "all options" are on the table. Ontario Premier Doug Ford called for "tariff for tariff, dollar for dollar" retaliation. The Canadian dollar fell as much as 0.4% intraday following the tariff announcement, touching 1.41 per U.S. dollar.
What to Watch
The USMCA review process now runs on a decade-long clock. If no extension is agreed, the pact could terminate on July 1, 2036. The current divergence—bilateral progress with Mexico, tariff escalation with Canada—raises a fundamental question: can a trilateral framework survive when one partner is negotiating and another is being penalized?
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