Carney said Canada remained engaged in the negotiations despite Trump's comments, describing the talks as a fight to protect Canadian workers and businesses. They're nasty," Trump said. Carney said "we are in the middle of a tariff war with the Americans" but laughed when asked about Trump's description. The United States already has tariffs on Canadian steel, aluminum and automobiles. Carney said existing U.S. tariffs on aluminum have contributed to a 58% increase in aluminum prices in the United States.