The question on everyone's mind these days: What happens if tariff-loving Donald Trump wins the U.S. election in November? Specifically, what does it mean for Canada, our side of the world's biggest trading relationship? Host Edward Greenspon talks to Canada’s chief NAFTA negotiator, Steve Verheul, about the ‘ugly choices’ we face in dealing with a more protectionist America, changes in global trade and why Canada can’t just ‘sit back and wait’ to see what happens.