Trump's threat to double tariffs on Canadian-made vehicles and auto parts may be a savvy negotiating ploy or bluster. It could also be a little of both.

WASHINGTON, United States: The Trump administration on Sunday warned that Canada would be “foolish” to think it could win a trade war with the United States, predicting a…

President Donald Trump threatened to double tariffs on Canadian cars on Monday, the latest sign that the United States and Canada are barreling toward a deeper trade war after…