An across-the-board 25 per cent tariff, experts says, would be devastating to the Canadian economy largely due to an anticipated knock-on decline in the value of the loonie.

TORONTO — Roughly $900 billion in annual trade between Canada and the United States — and with it, traditionally chummy bilateral ties — is on the brink of upheaval, with President Donald Trump threatening to impose sweeping tariffs on Canada as early as this weekend.

Having already forced Colombia to accept deportees by threatening a 25% tariff, President Donald Trump is readying the same move against Canada and Mexico as soon as Saturday. But this time, the stakes are higher and many economists surveying the possible damage doubt Trump would be comfortable with what they say would be