Heated rivalry: US v Canada

Mark Carney’s tough response to Donald Trump signals an escalation to the trade war between Canada and the United States. What does the dispute could mean for people and businesses on both sides of the border? What impact could the tariffs have on Trump’s midterm prospects? Could Canada could turn to other trading partners and European allies for support? Caitriona Perry, Sumi Somaskanda and Whitehouse correspondent Bernd Debusmann explore.