The two countries do more than $1.2 trillion in business each year, but negotiators on both sides cannot recall tensions running this high.
"I do think this is a high watermark in terms of some of the tensions between the United States and Canada," said Kelly Ann Shaw, a trade consultant who served as deputy assistant for international economic affairs in the first Trump administration. "My observation is that the Canadian side feels it a lot more acutely. I think Americans are a bit less stressed about the current dynamic than a lot of the Canadians are."
Canada is already facing tariffs on key exports. The proposed deal that Carney rejected included tariffs on vehicles and would have given the US a say over Canada's trade deals with other countries — terms that Kory Teneycke, former communications director for Conservative prime minister Stephen Harper, described as a non-starter.
"I think Canada would very much like to have a deal with the United States, but a deal, not a rollover, not an attempt to take over the country," Teneycke told 7.30. "Not a deal that is completely one-sided, that ends in the elimination of the auto sector in Canada while eliminating tariffs on US vehicles at the same time. That isn't a deal, that's extortion."
Since talks ended, the rhetorical temperature has soared. White House trade advisor Peter Navarro called previous Canadian negotiators "backstabbing, double-dealing people that you really couldn't trust." Ontario Premier Doug Ford responded by calling Trump "the type of guy in school that would take your lunch money."
Trump subsequently signed an executive order changing the name in the US of Lake Ontario — which forms a water border between the two nations, with Rochester on the US side and Toronto on the Canadian side — to Lake America.
Canadians appear willing to risk severe economic consequences. "I think you're going to see pushback from Canada," Teneycke said. "And I think Canadians understand that that might involve some economic or other sacrifice."