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.

Canada will impose 25% tariffs on C$155 billion ($107 billion) worth of U.S. goods from Tuesday if U.S. President Donald Trump's administration follows through with its proposed tariffs on Canadian goods,

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,