Trudeau, who spent the weekend in London meeting with European leaders, has vowed to retaliate should Trump follow through on his threat of hitting Canada with tariffs. Last month, he announced Canada would hit back by imposing 25 per cent tariffs on $155-billion worth of U.S. goods, but shelved those plans once an agreement to delay was reached.

Canada's oilfield drilling and services sector is already showing signs of slowing due to U.S. President Donald Trump's threatened tariffs, triggering fears that an expected industry rebound could stall if such levies go forward.

Canada is again staring down the barrel of massive U.S. tariffs on Canadian goods. With only days to go until U.S. President Donald Trump kicks off a trade war, Internal Trade Minister Anita Anand says Canada will need to wait and see what happens.

The tariffs U.S. President Donald Trump has threatened to impose on Canada tomorrow are clearly an economic danger, but are they also an existential threat? Trump in recent weeks has repeatedly suggested Canada should become the 51st state and threatened to use “economic force” to join the two countries together.

Tariffs on Canadian and Mexican goods imposed by the U.S. government are expected to take hold tomorrow, marking the start of a North American trade war.

Canadian Prime Minister Justin Trudeau will meet with the King on Monday where he will discuss US president Donald Trump’s threats to make Canada the 51st state. Charles has come under criticism in Canada for being silent about Mr Trump’s threats to annex Canada.

US Commerce Secretary Howard Lutnick on Sunday said tariffs on Canada and Mexico will go into effect as planned on Tuesday. This was as he stated that President Donald Trump will determine their exact levels.