President Trump said Monday he would impose tariffs of 50% on a wide range of goods imported from Canada. The duties are set to take effect in 30 days, with exemptions for Canadian fuel, fish, fertilizer and critical minerals. Trump announced the tariffs after threatening to sanction Canada for wildfire smoke drifting over much of the U.S., and after declaring that Canada unfairly discriminated against U.S. autos, alcohol and dairy products.