What to know about the 50% tariffs Trump is imposing on Canada

President Donald Trump has reached back to the Great Depression for an obscure trade weapon he can use to wallop Canada again. Trump on Monday announced 50% tariffs on some Canadian products, ratcheting up tensions with one of the closest U.S. allies. The move also threatens to push prices higher at a time when Americans are already frustrated with the high cost of living ahead of the Nov. 3 midterm elections. It’s unclear whether Trump’s latest tariffs would survive a legal challenge. The post...