American importers will pay a new 25 percent tax on goods from Canada and Mexico and a 10 percent levy on products from China.

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,

The president had promised action, though his team had been in negotiations over how to potentially dial back tariffs.