广告引爆美加贸易？美国加征10%关税，数百万观众目睹争端升级

Core Points - The trade dispute between the U.S. and Canada was ignited by a controversial television advertisement from the Ontario provincial government, which criticized U.S. tariff policies and used a speech by former President Ronald Reagan [1][10] - The U.S. government responded with a threat to impose a 10% tariff, which is higher than what Canada currently pays, emphasizing the potential economic impact on American consumers [1][2] Economic Impact - The proposed 10% tariff could lead to hundreds of billions of dollars in additional costs, which would ultimately be passed on to U.S. consumers, resulting in price increases of 5%-10% for various automotive products [4][2] - Canada's GDP contracted by 1.6% in Q2 2025, largely due to a significant drop in exports, particularly in the automotive and energy sectors, which are heavily reliant on the U.S. market [6] - The Ontario province, home to over 70% of Canada's auto parts manufacturers, is experiencing order cancellations and production cuts due to concerns over the tariff [6][8] Industry Responses - The American Automotive Manufacturers Association has warned that increased tariffs would undermine the price competitiveness of U.S. automakers in the global market [7] - The Canadian Steel Association predicts that prolonged tariffs could lead to nearly 20% of the Canadian steel industry's capacity being idle, affecting over 15,000 jobs [8] Political Dynamics - The advertisement's timing during a major U.S. sporting event was seen as a strategic move to influence public opinion against U.S. tariffs, which the U.S. government labeled as "deliberate fraud" [2][10] - The Ontario government has expressed a desire to maintain pressure on the U.S. regarding tariff impacts, while the Canadian federal government has advocated for dialogue to resolve trade differences [12][13] International Reactions - Mexico's economy minister has warned that escalating trade tensions could destabilize the North American supply chain, urging for dialogue rather than unilateral actions [20] - The European Union criticized the U.S. for undermining international trade rules through unilateral tariffs, raising concerns about a potential global trade protectionism wave [20] Future Considerations - The outcome of the U.S. Supreme Court's upcoming ruling on the constitutionality of presidential tariff powers will significantly influence the future of U.S.-Canada trade relations [22][15] - Canada is looking to diversify its trade partnerships beyond the U.S., aiming to double its non-U.S. export share over the next decade as a strategic response to the current trade tensions [20][26]