At the conclusion of the 2025 APEC summit in South Korea, Canadian Prime Minister Mark Carney publicly apologized to US President Donald Trump for an anti-tariff advertisement that had sparked controversy and disrupted ongoing trade negotiations. The advertisement, created by the province of Ontario, included a speech by former President Ronald Reagan, which was criticized by the Trump administration for misrepresenting Reagan's views on tariffs. This incident has further strained the US-Canada relationship, which has already been under pressure due to Trump's global tariffs. Following the ad's airing, the US government announced a 10 percent tariff increase on Canadian goods and suspended trade talks. Despite Carney's apology, Trump indicated that he would not resume negotiations, emphasizing that the advertisement was misleading and contrary to Reagan's actual stance on tariffs.