President Trump interrupted trade negotiations with Canada after the province of Ontario withdrew a critical advertising campaign against tariffs.

American President Donald Trump reacted vehemently after the province of Ontario suspended an advertising campaign that criticized tariffs, denouncing it as a "dirty trick." The campaign, which included a speech by former President Ronald Reagan, was set to be broadcast in the United States during the finals of the North American baseball championship. Trump stated that he has no intention of discussing with Canadian Prime Minister Mark Carney, in the context where trade negotiations seemed to be progressing.

Trade relations between the United States and Canada have been affected by Trump's policies, including the tariffs imposed on steel and aluminum, which have had a negative impact on the Canadian economy. The advertising campaign was criticized by the Ronald Reagan Foundation for the selective use of statements by the former president. Mark Carney emphasized that Canada will adapt its economic strategy in response to changes in American trade policy.