In recent months, plenty of business executives have said they were taking a wait-and-see approach to U.S. President Donald Trump's broad threats of tariffs. Early holiday-quarter earnings reports show many of them were not.

Trump has threatened still more tariffs, proposing 25% on goods from Mexico and Canada, an additional 10% on China and 25% on Colombia after that country initially refused deportation flights from the U.

Days before tariffs that have the potential to cripple Canada's economy are expected to come into effect, the country's political leaders are still in the dark about what exactly U.S. President Donald Trump will do.

The man U.S. President Donald Trump has chosen to oversee his tariff agenda says hitting Canada with 25 per cent across-the-board duties would be an emergency measure to achieve border security — and could be followed by more tariffs in the future.