From September 29, Canadian exports of beer, wine and other alchoholic drinks, as well as certain dairy products like whey protein will no longer be permitted to enter the US market, according to a trio of proclamations published Tuesday night, Politico reported.

The move is the latest confrontation in a quickly escalating US-Canada trade conflict. Trump and other senior administration officials spent the weekend lashing out at Ottawa over its decision to match US tariff hikes dollar-for-dollar. Those duties on some $20 billion in US exports went into effect Tuesday morning.

“We told the Canadians some weeks ago when they threatened to do this, that if they took this step, the United States would have no choice but to try to re-level the playing field once again,” a senior administration official told reporters in a press call Tuesday. The official, however, left the door open to a negotiated solution to the conflict. Canadian Minister for Canada-US Trade Dominic LeBlanc has been in contact with the Trump administration in recent days, the official said.

“I think there’s interest on the Canadian side in finding an alternative pathway, and, as always, we remain open,” the official said.

The US president deployed the same legal statute he used to hike tariffs on Canadian exports last month to implement the new import bans — Section 338 of the Tariff Act of 1930. The statute had never been used to impose tariffs or restrict imports, and is already facing legal challenges.

The official doubted the bans would pose significant supply chain or inflationary challenges. The bans and other tariffs actions, they said, were chosen to target products with limited US imports and in industries where the US has substantial domestic production and alternative sourcing options.

In addition to banning certain Canadian exports, the president also tweaked the scope of the existing 50 percent tariffs that went into effect last month, adding a slate of new products including cheeses, boats, metal products, and leather products, among other products beginning September 15, and excluding road salt, cement, certain hospital products, fishing rods and other products.

Sen. Susan Collins (R-Maine) urged the administration to exempt salt, cement and other products from the new duties over concerns they would weigh on municipal budgets. US Trade Representative Jamieson Greer texted Collins to tell her that those items were exempted following their conversation, according to a Collins spokesperson.

Earlier on Tuesday, Trump also said in a social media post that Canadian products could soon be removed from US government purchasing contracts. The senior administration official told reporters that such a move is still “in progress”.

“Canada gets broad access into the massive American Government Procurement Market, including those of our States,” Trump wrote on his Truth Social platform on Tuesday afternoon, arguing that US producers do not enjoy the same level of access in Canada’s government procurement schemes.

“From now on, NO RECIPROCITY – NO ACCESS!” he wrote, adding that he had directed the General Services Administration, which oversees procurement at government agencies, and the Office of the US Trade Representative, to remove Canadian products from government purchasing programs.

The GSA oversees around $126 billion in federal procurement contracts, according to the agency.

Tuesday’s Truth Social post came after Trump posted on Monday threatening to sever Canadian aircraft manufacturer Bombardier’s access to the US market. Trump took aim at the Canadian jet maker with a massive American footprint.

The senior administration official told reporters the president is still “reviewing options” for potential actions against Bombardier.

The threat on the Canadian aircraft producer sparked concern among some of his Republican allies. The company maintains manufacturing operations in Wichita, Kansas, stoking fears among the state’s two Republican senators that trade restrictions could lead to job losses. Both said they have been in contact with the administration about the president’s threat.

“I reached out to the Trump administration to make certain the President is aware of the significant contributions of Bombardier to Kansas,” Sen. Jerry Moran (R-Kan.) said in a post to X, adding, “I will continue working to see that Bombardier’s manufacturing operations not only remain in Kansas but continue to grow and create American jobs.”

Sen. Roger Marshall (R-Kan.), a staunch Trump ally who is in a tight race for reelection in November’s midterm elections, said that he would “fight” to preserve the facility’s 1,200 jobs.

“I’ve already taken that concern inside the Oval Office,” he said in his own post to social media Tuesday.

Talks between the Trump administration and Prime Minister Mark Carney’s government to avoid US tariffs on around $20 billion in Canadian exports collapsed abruptly last month, with both sides blaming the other for tanking a potential deal. Following the breakdown in talks, Carney announced a package of retaliatory tariffs and Trump teased new 50 percent US tariffs on Canadian autos and steel, among other products, set to go into effect in January.

The Canadian counter-tariffs target a slate of products from key battlegrounds in November’s midterm elections. Motorcycles, appliances, dairy products and metal products were all in Ottawa’s firing line, in addition to other manufactured goods, prompting concern from some Republican lawmakers in tight election races.

Carney braced Canadians on Tuesday for hard times ahead in an explainer-style video, blaming the Trump administration for treating trade negotiations as a zero-sum deal-making game.

“It’s a shame, because a mutually beneficial trade agreement between Canada and the United States is possible,” he said, noting how deals “privilege the few” while agreements “benefit the many”.