Canada’s initial retaliatory tariffs against the U.S. will remain in place despite President Donald Trump postponing 25% tariffs on many imports from Canada for a month, two senior Canadian government officials said.

Ontario Premier Doug Ford, the leader of Canada’s most populous province, also said Thursday that, starting on Monday, the province will charge 25% more for electricity shipped to 1.5 million Americans in response to Trump’s tariff plan. Ontario provides electricity to Minnesota, New York and Michigan.

Ford said Ontario’s tariff would remain in place despite the one-month reprieve from Trump.

“The only thing that’s certain today is more uncertainty. A pause on some tariffs means nothing. Until President Trump removes the threat of tariffs for good, we will be relentless,” Ford posted on X.

British Columbia Premier David Eby also said his province will introduce legislation in the coming days that would give it the ability to levy fees on commercial trucks traveling from the United States through the province to Alaska. He said Canadians won’t let up until the tariffs are taken off the table.