Trade falls apart when one partner acts like a 'toxic friend,' says economist

Trade falls apart when one partner acts like a 'toxic friend,' says economist News Duration 6:16 Justin Wolfers, a professor of public policy and economics at the University of Michigan, says U.S. tariffs and Canadian counter-tariffs mean less co-operation between the two economies, hurting both. But the dilemma for Canada is whether they can trust an agreement when 'any American concessions last until the president changes his mind.'