On Saturday, he said that American negotiators “asked too much and offered too little.” Among other things, Mr. Carney said that American negotiators pushed to roll back Canada’s efforts to promote Canadian and French language content in online streaming services, subsidies for industries like publishing and film production and even mandatory labeling in French, an official language in Canada, as well as English on packaging.

“We were close to reaching a comprehensive agreement with the U.S., but they made changes, including threats on French language and culture and Canadian culture that would never be acceptable for that reason,” Mr. Carney said in French. “That marked the end of that stage of negotiations.”