Trump slaps 50% tariffs on new list of Canadian goods in response to boycotts of U.S. alcohol, dairy

President Trump plans to impose 50% tariffs on a variety of Canadian goods, such as hockey sticks and cement, in retaliation for Canada's treatment of American exports of alcohol, dairy and motor vehicles. A senior administration official said Mr. Trump decided to strike back at Canada after all but two provinces discontinued sales of American liquor, though they did not impose limits on alcohol from other countries. Canada imposes tariff quotas on auto imports from the U.S. but not other countries, and it imposed tariffs on U.S. cheese while declining to impose similar tariffs on European Union cheese. Mr. Trump is imposing the tariffs under Section 338 of the Tariff Act of 1930, which allows a president to impose tariffs of up to 50% if a country discriminates against the U.S. or burdens American commerce. Mr. Trump is using a range of authorities to impose tariffs after the Supreme Court struck down his ability to easily raise or decrease tariffs on individual nations under a 1977 economic-powers law. Critics say U.S. consumers and importers often bear the cost of the tariffs, so the levies are self-defeating and corrosive to trade.