美国拿加拿大祭旗，谁敢学中国反抗，等于打美国的脸，决不轻饶

Core Viewpoint - The U.S. has increased tariffs on Canada from 25% to 35% as a response to Canada's retaliation against U.S. tariffs, marking a significant shift in U.S.-Canada relations [3][5][9] Group 1: U.S.-Canada Relations - Canada, traditionally a close ally of the U.S., is facing unprecedented tariff increases, which has caused shock domestically and among other Western nations [3] - The U.S. perceives Canada's retaliation as a direct challenge, contrasting with other allies who have accepted U.S. tariffs without response [9] Group 2: U.S. Trade Policy - The U.S. Trade Representative, Jamison Greer, indicated that the U.S. must maintain the integrity of its tariff actions, hence the increase in tariffs on Canada serves as a warning to other nations [7] - The U.S. has been unable to effectively counter China's retaliatory measures, leading to a unique situation where China is treated differently compared to Canada [7][10] Group 3: Strategic Implications - The U.S. aims to deter other countries from following Canada's example of retaliation, emphasizing the need for strict enforcement of its global tariff policy [7][9] - The situation reflects broader concerns within the U.S. regarding maintaining control over its trade relationships, especially as other countries like Brazil and India begin to challenge U.S. policies [10]