Canada PM Mark Carney says Ottawa could not accept the U.S. trade offer as Trump’s 50% tariffs escalate tensions between the two allies.Carney rejects any approach treating Canada as a U.S. “subsidiary,” defending Canadian sovereignty, industry and the right to sign trade deals with other nations.Watch Carney’s fiery response as U.S.-Canada trade talks collapse, Trump threatens more tariffs and Canada vows dollar-for-dollar retaliation. Show more Show less