The federal Liberals look like they are about to get into a risky tax fight with...the Americans. The proposed digital services tax (DST) would apply to U.S. tech companies like Amazon for doing business in Canada. Should Canada be attempting to tax U.S. companies for services in Canada? Aaron Wudrick is the Director of Domestic Policy with the Macdonald-Laurier Institute and joins Gormley to explain how bad this can be for Canada.