It's case by case, I'm assuming.
In some instances, it does make a lot of sense to go through the WTO. I mentioned the notice process of the technical barriers to trade committee. Frequently countries will band together when there's a measure introduced somewhere else that they don't like—exporters in common, for example—but in some cases it makes a lot of sense to do it bilaterally. You might want to keep things more trusting, maybe, in the Canada-U.S. or Canada-Mexico context, for example.