TRADE WAR: President Trump reignited a trade war with Canada yesterday, signing an order to impose a 50 percent tariff on a range of Canadian goods, claiming that Canada has discriminated against the US in motor vehicles, dairy and alcohol.

  The tariffs to go into effect within 30 days apply to Canadian wine, hockey sticks, cement, dairy products, plywood, paper and furniture. In addition to being one of the most peaceful countries on Earth, Canada is America’s second largest trading partner after Mexico.

  While Trump’s arbitrary tariffs were shot down in the Supreme Court, the Canada tariffs will be imposed under an obscure provision of the Tariff Act of 1930 that allows the president to impose tariffs of up to 50 percent on imports from countries that discriminate against US commerce specifically, as...