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 move likely will trigger retaliation and risk igniting a trade war that could cause broad economic disruption for all countries involved.