Just one week after Canada was temporarily spared from across-the-board tariffs, U.S. President Donald Trump said he will put 25 per cent tariffs on all of the country's steel and aluminum imports, a move that will particularly sting Canada.

Trump also reaffirmed that he would announce “reciprocal tariffs” — “probably Tuesday or Wednesday” — meaning that the U.S. would impose import duties on products in cases where another country has levied duties on U.