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.

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,

Canadian Prime Minister Justin Trudeau said Canada would not allow Trump's "unjustified" tariffs to "go unanswered."