The U.S. president plans to double the planned tariffs on Canadian steel and aluminum imports.

Donald Trump said a 25 per cent tariff due to take effect on Wednesday will now be 50 per cent.

It comes after the province of Ontario placed a 25 per cent tariff on all electricity heading to the United States.

“I will shortly be declaring a National Emergency on Electricity within the threatened area,” Trump said in a post on Truth Social.

“This will allow the U.S to quickly do what has to be done to alleviate this abusive threat from Canada.”

Trump is also threatening to increase tariffs on cars coming into the U.S. on April 2 if Canada does not drop its retaliatory tariffs.

On Monday night, Trump called Canada a “tariff abuser” in response to Ontario’s electricity tariffs.

Ontario Premier Doug Ford said the move was in retaliation to Trump’s own tariff threats, which he initially said would happen at the start of February before pausing them for a month.

He threatened them again at the start of March, only to pause some of them for a second time. However, many Canadian provinces are still retaliating until the tariffs are totally dropped.

Ford said the power levy would affect about 1.5 million customers in Minnesota, Michigan and New York, increasing monthly bills by about $100 for the average household or business.

Trump claims Ford is not allowed to tariff electricity exports, according to a social media post.

He said they will get back any money they lose to the electricity surcharge when reciprocal tariffs kick in on April 2.