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U.S. President Donald Trump dramatically upped the ante in his trade war with Canada.

A U.S. crackdown on illegal immigration will affect many Canadian snowbirds who drive across the border, with officials requiring visitors staying for at least a month to register on the government’s website, says an immigration lawyer.

U.S. President Donald Trump says he now plans to double the tariffs on all steel and aluminum coming into the country from Canada starting Wednesday morning in response to retaliatory measures announced by Ontario earlier this week.

U.S. President Donald Trump said he’ll buy a new Tesla to support Elon Musk, after shares of the electric-car maker had their worst day in four years amid a growing backlash over Musk’s political allegiances.

MARKETS TODAY: North American markets continue to slide on economic fears

Oil and gas producers Whitecap Resources Inc. and Veren Inc. are joining forces in a $15-billion deal to create the biggest landholder in two Alberta shale formations.

Even when Mark Carney was still in high school, his friends bugged him about whether he would become prime minister one day.

A former Australian prime minster said the Trump administration’s treatment of longtime allies was providing an opportunity for China, in remarks that came shortly before the U.S. president delivered a personal rebuff

U.S. stock markets had one of their worst days in years on Monday on fears that U.S. President Donald Trump’s erratic trade policy swings are creating uncertainty that will hamper the U.S. economy.

Stock markets on both sides of the border took a steep tumble Monday as the reality of a U.S.-Canada trade war took further hold, with the TSX losing almost 400 points, while the blue-chip Dow was down almost 900 points and the Nasdaq was four per cent lower.