A nation does not easily turn away from the partner that shaped its economic identity, yet Canada under Mark Carney has done precisely that — converting months of diplomatic signaling into operational policy by placing tariffs on American goods. The move is less a negotiating tactic than a declaration of reorientation, timed to coincide with international engagements that suggest Canada is actively building a new center of gravity for its trade and alliances. In the long arc of North American integration, this moment may mark the point where proximity ceased to be destiny.