But economic, political and technological changes have left Canada with few ways to handle trade restrictions now.

Canada has drawn up an initial list of C$150 billion ($105 billion) of US-manufactured items that it would hit with tariffs if President-elect Donald Trump decides to levy tariffs against Canadian goods,

Canada is ready to respond to tariffs from its top trade partner the United States on Monday if President-elect Donald Trump follows through on his threat to impose them, Foreign Minister Melanie Joly said on Friday.