US stocks fell on Friday after President Donald Trump threatened a 35% tariff on Canada — a sharp escalation in an ongoing trade war. The Dow closed lower by 279 points, or 0.63%. The broader S&P 500 fell 0.

Major stock indexes were slightly lower on Friday as U.S. President Donald Trump's announcement of tariffs on imports from Canada fanned worries about trade tensions, with the Canadian dollar down against the greenback.

President says Canada’s tariff retaliation, lack of progress on curbing fentanyl smuggling is behind new import penalty