President Donald Trump said in a social media post Saturday that a Canadian TV ad criticizing tariffs was a “hostile act,” and in response, “I am increasing the Tariff on Canada by 10% over and above what they are paying now.

U.S. President Donald Trump announced on Thursday that he had terminated trade negotiations with Canada in response to an advert produced by the government of Ontario featuring historic footage of President Ronald Reagan arguing that tariffs undermine economic prosperity.

President Donald Trump pulled out of trade talks with Canada Thursday night, furious over what he called a “fake’’ television ad from Ontario’s provincial government that quoted former U.S.