Trump’s new import ban starting Sept.29 covers only 0.25 per cent of Canada’s exports to the U.S., but raises trade uncertainty.

Canada struck back at Trump on Tuesday with tariffs on about $20 billion worth of U.S. goods.

Canada retaliates with 15-50% tariffs on $20B in US goods and a C$7.5B support package after Trump imposed 50% duties on Canadian imports.

Canada has imposed retaliatory tariffs on a wide range of American goods. These measures target sectors like steel, dairy, and appliances, impacting US exports. The move escalates…