Aug. 18 (UPI) — President Donald Trump late Tuesday announced a three-day pause on imposing 50% tariffs on Canada less than two hours before they were to go into effect, saying they “have a DEAL!”

The tariffs were to go into effect at 12:01 a.m. Wednesday, but were delayed through the end of Friday by Trump’s announcement on social media issued about 90 minutes before the deadline.

No specifics on what the deal entailed were offered, though Trump said the controversial Keystone XL Pipeline project, revoked by former President Joe Biden over climate change concerns, “may be awoke from the grave!”

U.S. Trade Representative Jamieson Greer added that the deal includes “comprehensive access for all American goods,” economic security commitments, digital trade alignment and other provisions protecting the U.S. market.

The deal remains to be finalized, he said.

Prime Minister Mark Carney issued a late Tuesday statement acknowledging the tariffs’ postponement but did not state a deal had been reached, saying work continued.

“Substantial progress has been made, although there is important work still to be done,” he said.

“While we continue this work, Canada remains focused on building a stronger, more independent and more competitive economy at home.”

Greer had been leading negotiations with Canadian representatives ahead of the deadline. He said last week that the negotiators were reviewing options and that he expects Canada to drop certain measures it had already taken in response to the U.S. tariffs, The New York Times reported.

“If a country retaliates against us, we’re obviously not going to tolerate that,” Greer told reporters Friday. “We’ll take action. My sense is the Canadians want to have a more conciliatory approach, but we’ll see.”

Trump signed orders in July to impose 50% tariffs on $20 billion worth of Canadian goods, including cement and hockey sticks, representing about 2% of the entire trade between the United States and Canada, starting Wednesday.

“President Trump is taking action to hold Canada accountable for its continued discrimination against and unreasonable and unequal treatment of U.S. commerce that has burdened and disadvantaged hard-working Americans,” the White House said in a statement at the time.

On Aug. 5, he called Canada “nasty” in a Las Vegas speech.

“Canada’s nasty. They are. They’re nasty,” Trump said. “I love the people, but they’re nasty. Nasty leadership.”

Canadian Prime Minister Mark Carney and Trump spoke on the phone Monday, a Carney spokeswoman said. She didn’t give any details.

Canadian negotiators also want to ease the tariffs already imposed on Canadian industries. There are tariffs of up to 50% on steel, aluminum and autos. Some tariffs also affect Canadian softwood lumber.

Canadian lumber manufacturing CEO John Brink told CTV that tariffs have devastated the lumber industry. He said, “most of the lumber industry in Canada is paying up to 45.16% in tariffs and duties combined. So the effect has been devastating.”

Brink said about half of British Columbia’s lumber manufacturing capacity has shut down.

“There used to be 800 secondary manufacturers in British Columbia alone. We are now down to about 50. Not all due to tariffs and duties, but due to a combination of [factors],” Brink added.

“I think the big question for the United States is: Are they even interested in securing an agreement, a deal, some kind of operational détente, or is Trump’s real objective just to flex? Is it just to demonstrate he’s in control? In which case, we’re chasing a phantom deal,” CTV News political commentator Scott Reid said.

He added that the deadline will be “the most important, most significant and most treacherous of Mark Carney’s political career.”

Greer has said he expects Canada to make concessions if a deal goes through. But not everyone in the Great White North wants that.

“Canadians elected Mark Carney to both stand up to Trump while also trying to negotiate a deal, or negotiate down the tariffs, and I don’t think those are mutually exclusive, but it is a narrow path for sure,” said Brian Clow, a former senior official in Prime Minister Justin Trudeau’s government, The Times reported.

If no deal is made, expect the trade war to escalate, Clow said.

“If the U.S. decides to proceed with imposing these new tariffs tomorrow, Canada, although this current government has eased back on retaliation, will have to respond in some way,” he said.

Former senior White House trade adviser Kelly Ann Shaw told CTV that negotiations look “promising” for Canada.

“I’ve been involved in a number of international trade negotiations and other negotiations throughout my career, and the hardest issues always get resolved at the very last moment,” Shaw told CTV Tuesday.

“So I don’t expect any sort of announcement until later today, possibly as late as midnight,” Shaw said. “But the fact the two parties are still at the table, I take as a good sign.”

Trump has long used tariffs as a mechanism for both punishment and negotiation, and during his second term, he attempted to impose sweeping tariffs, including against Canada, but they were thrown out by the U.S. Supreme Court in February.

The tariffs paused late Tuesday were to join the 10% import duty on many Canadian goods, as well as previously imposed tariffs ranging from 10% to 50% on products, such as steel, aluminum, copper, automobiles and softwood lumber.

Canada responded by imposing a temporary 25% tariff on certain wood cabinets and vanities, as well as a 25% tariff on U.S. vehicles, as well as selected steel and aluminum products, among others.

Once among the strongest of partnerships, the U.S.-Canada relationship has soured during the second Trump administration. Comments from the U.S. commander in chief on annexing Canada and making it the 51st state — as well as continual threats of tariffs — has prompted Ottawa to turn to Europe in search of stable economic and security relations.