On Wednesday, the chief trade negotiator for the Trump administration challenged Canada’s claim that last-minute demands from the U.S. caused the collapse of a trade agreement between the two nations, asserting that it was the Canadian negotiators’ issues regarding the deal’s “implementation” that led to Ottawa’s decision to withdraw.
In a conversation with CBC News, U.S. Trade Representative Jamieson Greer mentioned that Canadian officials introduced new requests once his counterpart, Canada-U.S. Trade Minister Dominic LeBlanc, returned from Ottawa following the tentative agreement reached on August 18.
“We had come to what I have previously described in the media as the best deal any nation could secure with respect to Canada,” Greer told CBC News chief political correspondent Rosemary Barton during his first interview with a Canadian news organization since the trade discussions fell apart on Friday.
“When [LeBlanc] returned, they presented some additional perspectives. They had some more requests. They brought forward items that were excessive for the United States.”
The ambassador indicated that the timing for the two countries to reconvene for negotiations remains uncertain. He noted that he and LeBlanc had not been in contact as of Wednesday.
“I would say we don’t currently have open communication channels,” Greer stated. “I maintain a good rapport with Minister LeBlanc, but at this moment, it seems the Canadian side is deliberating their next actions.”
Greer’s comments, as the cabinet member responsible for implementing the president’s tariff policies, underline the differing perspectives between the two countries regarding the reasons for the breakdown in discussions. Prime Minister Mark Carney was the first to suggest that last-minute changes derailed the agreement, asserting that it was the U.S. that attempted to impose “unfair, uneconomic” revisions that “called into question the reliability of any agreement.”
The White House has indicated that Canada rejected a proposal that would have included reductions to existing tariffs on steel, aluminum, lumber, and Canadian-manufactured vehicles.
Regarding retaliation, Greer did not dismiss the possibility of a reciprocal response from the U.S. after Canada announced dollar-for-dollar counter-tariffs on numerous American products set to take effect following Labour Day. These tariffs are in reaction to the latest round of U.S. tariffs that began last weekend.
“If the Canadian side retaliates further, naturally, we won’t just accept that. Our stance is, ‘Do not retaliate,'” he stated, speaking outside the White House. “I understand the sentiments in Canada and their perspectives. It’s regrettable, but it is what it is.”

Greer outside the White House on Wednesday. (Jonathan Austin/CBC)
During a press conference on Saturday, Carney stated that the U.S. proposal would have ultimately infringed on Canada’s ability to engage in trade agreements with other nations, jeopardized essential industries, and weakened protections for the French language.
“A favorable deal [transformed into] one we could not accept,” the prime minister remarked.
Neither government has made the draft agreement public, and both LeBlanc and Greer have referred to confidentiality when asked about broader specifics.
Greer indicated that the White House was ready to cut the tariff on most steel imported from Canada from 50 percent to 25 percent. This would have been subject to a tariff-rate quota system, meaning only a fraction of steel imports would qualify for the reduced rate.
Concerning Canadian-made vehicles, Greer noted that the tariff would have been lowered from 25 percent to 15 percent, with “the potential to decrease to seven percent.”
Sources informed CBC News that the auto tariff could have been further reduced by increasing U.S. content, bringing the effective rate down to 7.5 percent. The Canadian side felt this offer was still inadequate, according to sources.
Greer refuted claims that the White House sought a role in the trade agreements Canada establishes with other countries. He stated that the administration aimed for cooperation, referencing the Fortress North America concept emphasized by Ontario Premier Doug Ford.
“We did not have any text of that nature,” Greer remarked on Wednesday. “We discussed coordinating on a bilateral basis, right? It was not a matter of ‘Canada shall’ or anything of that sort. It was a conversation about collaboration.”



