After the trade deal collapse, what now?

At the last minute, trade negotiations between Canada and the U.S. have fallen apart. Now, with 50 per cent tariffs on some Canadian exports, Prime Minister Carney says we have no choice but to fight back. Former NAFTA negotiator Barry Appleton explains how that fight could go, and how things fell apart in the first place. Also, we look at what a continuing trade war could mean for small businesses and explain the in's and out's of doing a "credit lock" to protect yourself from scammers.