特朗普气炸了！美国最大王牌，对中加已不起作用，新一轮威胁发出

Group 1 - Trump's tariff strategy, once effective against China and its allies, is now failing, particularly in the case of Canada, where threats have not yielded the expected results [3][7][13] - Canada has signed a new electric vehicle cooperation agreement with China, allowing Chinese electric vehicles to enter the Canadian market with significantly reduced tariffs, which directly conflicts with U.S. interests [5][11] - In response to Canada's cooperation with China, Trump threatened to impose a 100% tariff on Canadian goods, but this threat has not deterred Canada, which remains committed to its agreement with China [7][9][19] Group 2 - The effectiveness of Trump's tariff policies has diminished over time, especially against economies like Canada and China, which have adapted and strengthened their economic ties [15][31] - Canada's decision to pursue independent trade relations, particularly with China, reflects a growing sentiment among countries to reassess their economic partnerships in light of U.S. trade policies [19][21] - European countries are also increasingly dissatisfied with U.S. tariff policies, leading them to deepen economic cooperation with China, particularly in the electric vehicle and renewable energy sectors [21][23]