OTTAWA — Canada on Tuesday named the nearly 900 American products it will hit with retaliatory tariffs of up to 50 percent starting Sept. 8, filling in the counterstrike Prime Minister Mark Carney vowed over the weekend and matching the 50 percent duties Washington imposed on about $20 billion of Canadian goods four days earlier.

The C$28 billion ($20 billion) list, unveiled by Finance Minister François-Philippe Champagne, moves the U.S.-Canada trade war from threat to schedule and puts a two-week clock on businesses that supply cars, homes and grocery aisles across the world's largest bilateral trading relationship. Champagne paired the tariffs with a C$7.5 billion package to support Canadian workers and firms hit by the U.S. levies.

What is on the list

The top-rate 50 percent tier lifts an existing 25 percent Canadian duty on U.S. steel and aluminum to match the American rate, and extends the same 50 percent charge to natural honey, furniture, clothing and apparel, makeup and perfume. A 25 percent tier covers household appliances such as dishwashers and washing machines, dairy products including cheese, fish and seafood, and certain steel and aluminum derivative goods. A 15 percent tier picks up tools and machinery, including forklifts and air-conditioning equipment.

Ottawa said it chose products Canadian consumers and businesses could source elsewhere, an attempt to blunt domestic harm.

Ottawa's line

"Those tariffs will have real consequences for Canadian workers, businesses and communities across our nation," Champagne said of the U.S. duties. "Canada must respond." He called Ottawa's answer "proportionate" and "strategic."

The C$7.5 billion support envelope will fund programs "designed to minimise job losses and keep companies afloat," Champagne said. Financial analysts cited by the BBC estimated the U.S. duties on about $20 billion of Canadian goods could trim 0.3 percent to 0.6 percent off Canadian gross domestic product in the short term.

Washington's answer

The White House cast Canada's move as the rejection of a favorable offer. Washington had extended "the most preferential market access of any country on Earth" in the collapsed talks, the statement said. "Instead of partnership, Canada chose unreasonable demands, walk-backs, and flat-out rejection."

President Trump, in a series of Truth Social posts Tuesday, accused Ottawa of "ripping off" the United States for decades and said American farmers face steep Canadian duties. "I deal with many countries, and Canada is easily the most difficult and unreasonable," Trump wrote. "They feel entitled, but they are not a State, and will be entitled no longer!" He floated renaming Lake Ontario "Lake America" and wrote, "We don't expect to doing much business with Ontario any longer."

Trump's Monday threat to raise U.S. tariffs on Canadian cars, trucks, auto parts and steel to 50 percent effective Jan. 1, 2027, remains separate from the duties Ottawa is now matching.

A cooler day

Public rhetoric that ran hot Monday softened by Tuesday. Ontario Premier Doug Ford, who told Toronto radio station Newstalk 1010 on Monday that Trump "can kiss my a-- as far as I'm concerned" and called the president a "loser" at a news conference the same day, told CNN a day later that "things got a little heated." Ford added: "But I want to make a deal — a good deal for the American people, a good deal for Canadians."

Mexican President Claudia Sheinbaum dispatched her economy secretary, Marcelo Ebrard, to Washington for emergency talks after negotiations with Canada collapsed, drawing the third member of the USMCA North American trade pact into a dispute that now questions the agreement's future.

The other view

The Trump administration frames Tuesday's escalation as Ottawa's choice. Fox News reported that the U.S. trade chief warned Canada had walked away from the best deal Washington could offer, and Trump argued Tuesday that "America has been carrying Canada for decades" and that much of the electricity, oil and gas Canada exports is transported through the United States. About 70 percent of Canadian goods exports go to the United States, according to BBC data, and analysts still expect a measurable Canadian output hit from the tit-for-tat duties. Ford has said an "energy surcharge is on the table" but Ottawa did not include energy in Tuesday's list.

Canadian voters have so far backed the confrontation. An Angus Reid poll over the weekend found 76 percent of Canadians supported Ottawa's decision to leave the negotiating table, even as respondents said they worried about their own job security.

The Canadian levies take effect Sept. 8. Trump's threatened 50 percent auto and steel duty is scheduled for Jan. 1, 2027.