Canada-US trade war continues

More than a week after the U.S.-Canada talks collapsed, our national affairs panel —the CBC's Rosemary Barton, the Toronto Star's Ryan Tumilty, and Joël-Denis Bellavance of La Presse—  unravels what we know about what happened, how the Carney government has responded, and how all this might affect the Conservatives' fortunes, the Quebec election, and the federal byelections happening Monday.