U.S. Trade Representative Jamieson Greer entered a meeting with Canadian officials Friday afternoon with a frown.

The United States is set to impose 50% tariffs on $20 billion worth of Canadian products early Saturday after last-ditch negotiations failed to resolve the latest strain in already tense relations between the historic allies.

In a speech on Saturday morning, Prime Minister Mark Carney said Canada walked away from the negotiation table to protect its sovereignty.

“Canada wants the benefits of being a State, without being one,” the U.S. president posted on Truth Social.

Trump's remarks come after Canadian PM Mark Carney stated that Ottawa will respond with a "dollar for dollar" move to match the 50 per cent tariff.

Canada imposes new tariffs on US goods after trade deal with the US collapses, escalating a tariff fight affecting billions in steel, dairy, and other products. Both countries face economic tensions with no new talks planned.

The Ontario premier says the states are "politically significant... to the current administration's base of support."

Top Canadian negotiator Dominic LeBlanc said that a US trade deal was not finalised, with just hours left until a midnight deadline when steep new tariffs are set to come into force.