Canada is drawing up plans for extensive tariffs against US products if Donald Trump follows through on his threat to put 25% levies on Canadian goods, according to people familiar with the matter.

Canada is looking at putting retaliatory tariffs if President-elect Donald Trump follows through with his threat to impose 25 percent tariffs on all Canadian products.

Trump has threatened a tariff on goods from Canada if the country does not clamp down on immigration and the flow of drugs across its border with the U.S.