President Trump announced sweeping tariffs on goods imported from Mexico, Canada and China, sending shocks through the global supply chain and raising fears about consumer costs.

Canadian officials were informed that goods exported to the United States will be subject to a 25 percent tariff, with a lower rate for Canadian oil, starting on Tuesday.Credit...Ian Willms for The New York Times Trump tariffs: President Trump on Saturday followed through with his threat to impose stiff tariffs on Mexico,