Canadian Ambassador to the United States Mark Wiseman stated that the Canada-U.S. trade negotiations broke down on the evening of the 22nd due to multiple issues. The written text of the potential agreement differed from the consensus that Canada believed existed, and it was not a single issue that led to the failure of the negotiations. The breakdown of the talks triggered a new round of tariff measures, which could lead to an escalation of the Canada-U.S. trade dispute. Prime Minister Mark Carney described the U.S. tariffs as an attack on Toronto, escalating a trade war that will impact residents on both sides of the border. He criticized the U.S. proposal as un-economic, unfair, and undermining net benefits for Canada, saying the conditions asked too much and offered too little. The 50 percent U.S. tariffs on $20 billion of Canadian goods took effect early Sunday morning under Section 338 of the Tariff Act of 1930, bypassing prior exemptions under the USMCA. President Trump responded by accusing Canada of requesting benefits only for a U.S. state without being one.