Why is Canada targeting Republican-led states? President Trump officially imposed tariffs on Canada, Mexico, and China on Saturday after they had ignored his threats. Trump slapped the tariffs on the three countries under the International Emergency Economic Powers Act. 25% tariffs on all Mexico imports 25% tariffs on nearly all Canadian imports — 10% on Canadian energy resources 10% tariffs on all China imports “Today, I have implemented a 25% Tariff on Imports from Mexico and Canada (10% on Canadian Energy), and a 10% additional Tariff on China. This was done through the International Emergency Economic Powers Act (IEEPA) because...