It may appear that U.S. President Donald Trump's move to hit many Canadian products with a new tariff of 50 per cent came out of the blue, but there are clear signs of what's driving the tactic.

The tariffs will apply to goods covered by the Canada-U.S.-Mexico Agreement, escalating a trade dispute the White House says stems from Canada's policies targeting American autos,…

WASHINGTON - U.S. President Donald Trump is signing an executive order today to hammer certain Canadian products with 50 per cent tariffs in 30 days, senior White House officials…