Democrats launch probe into Trump's threat to block Gordie Howe bridge

U.S. Democrats have launched an investigation into President Donald Trump's threat to block the opening of the Gordie Howe International Bridge, which connects Windsor, Ont., and Detroit. Power & Politics hears from Windsor Coun. Angelo Marignani. Plus, NDP leadership candidates face off in a last debate this week. Two of them join P&P with their vision for the party.