加拿大广告惹怒特朗普，美加贸易再陷僵局

Group 1 - President Trump announced the termination of all trade negotiations with Canada due to a misleading advertisement that used a video of former President Reagan to oppose tariffs [1][4] - The advertisement cost $75 million and was part of a campaign by the Ontario provincial government to promote its tariff policy and counter Trump's stance [1][4] - The termination of negotiations may escalate the ongoing trade tensions between the U.S. and Canada, which have been intensifying for months [5] Group 2 - Just days before the announcement, reports indicated that the U.S. and Canada had reached an agreement on steel, aluminum, and energy trade, with plans for leaders to sign the agreement at the upcoming APEC summit [5] - Canadian Prime Minister Carney had previously visited Washington to ease trade tensions and claimed to have reached a consensus with Trump regarding steel and aluminum trade [5] - Trump's hardline stance towards Canada is partly influenced by domestic legal challenges surrounding his tariff policies, with the Supreme Court set to hear arguments on the legality of these tariffs [5][6] Group 3 - In response to escalating trade pressures, Canada is actively seeking to reduce its economic dependence on the U.S., with plans to double exports to non-U.S. markets over the next decade [9] - Carney acknowledged that the nature of trade relations with the U.S. is changing, citing a more turbulent and competitive global economic environment [9] - The Canadian government has initiated a list of key national projects aimed at boosting the economy and reducing reliance on the U.S., although Carney admitted that this economic transformation will take time and sacrifices [11] Group 4 - Trump's tariffs have already impacted the Canadian economy, particularly in the automotive sector, leading to rising pessimism about economic growth among Canadians [11] - More than half of Canadians believe the economy will weaken in the next six months, and policymakers have reported concerning forecasts from steel and aluminum exporters, who have experienced significant layoffs due to tariffs [11]