Canada has responded to Donald Trump's tariffs with a set of taxes of their own, accusing the US President of "disrupting a successful trading relationship." Trump's new 25 per cent tariffs on imports from Mexico and Canada took effect on Tuesday.

As Donald Trump's tariffs on Canada are set to activate, Canadian Prime Minister Justin Trudeau said he would respond promptly with tariffs for America. Canada Prime Minister Justin Trudeau said Monday that “there is no justification” for Trump’s tariffs.

President Donald Trump's 25% tariffs on Canada and Mexico, and the doubling of 10% levies on goods from China, took effect Tuesday—and Beijing and Ottawa immediately hit back.

Canada and China hit back. Mexico is expected to react Tuesday. The moves raised fears of higher prices for U.S. consumers and a trade war.

Canadian Prime Minister Justin Trudeau said he wouldn’t allow President Trump’s tariff decision to “go unanswered,” and set in motion the imposition of retaliatory tariffs targeting about $100 billion of U.

President Donald Trump's new 25% tariffs on imports from Mexico and Canada took effect on Tuesday, along with a doubling of duties on Chinese goods to 20%, launching new trade conflicts with the top three U.

If President Trump's tariffs against Canada take effect, Canadian Prime Minister Justin Trudeau said the U.S. would immediately face a raft of countermeasures on Tuesday. Why it matters: Trump's comments Monday that he would impose 25% tariffs on Canada and Mexico sent markets sliding amid fears it could start a trade war,