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

Trump is officially imposing 25 per cent tariffs on almost all Canadian goods and a 10 per cent tariff on Canadian energy products, to begin Tuesday.

US President Donald Trump has signed an order to impose stiff tariffs on imports from Mexico, Canada and China, fulfilling a campaign promise but raising the prospect of increased prices for American consumers.