What I would say makes sense for Canada is to open up the trade negotiations. If there was were a fundamental problem with the way the Conservative government, with all respect, negotiated CETA and the TPP, it was that it was done with an enormous amount of secrecy and then presented on a take-it or leave-it basis.
The TPP is dead. ACTA , which it negotiated, is dead, and CETA had to largely be renegotiated by the Liberals on key issues because of that secrecy. If we want to ensure that does not happen again when we talk about the NAFTA renegotiation, open these things up. The solution isn't to ensure that every negotiator knows the nuances of every single issue; the solution is to bring in many experts into the process through the negotiating process so that these issues get flagged as we're negotiating—not after the fact when it's too late to do anything about it.