As Canada and the U.S. Negotiate NAFTA behind closed doors, at top U.S. Republican Lawmaker has publicly turned up the heat.

The GOP house whip has said there is ‘growing frustration’ in Congress with what he calls Canada’s negotiating tactics.

Dave and National Post reporter Tom Blackwell look at what the urgency is in the talks, and what it may take to get a deal done.

Learn more about your ad choices. Visit megaphone.fm/adchoices