"Prime Minister Justin Trudeau and Foreign Affairs Minister Chrystia Freeland speak at a press conference in Ottawa on Thursday, May 31, 2018. Canada is imposing dollar-for-dollar tariff ""countermeasures"" on up to $16.6 billion worth of U.S. imports in response to the American decision to make good on its threat of similar tariffs against Canadian-made steel and aluminum.THE CANADIAN PRESS/ Patrick Doyle"