Modern trade agreements have moved from reducing tariffs, which are already generally fairly low—the World Trade Organization rounds have done great work there—to focusing on those issues. I think the new trade agreements we see are working very diligently to address these issues. We just put out 90 pages on the Canada-China relationship, focused on non-tariff barrier issues in agriculture, so we and others are doing a lot of thinking about how to resolve those issues.
I would note though, that a non-tariff barrier can be in the eye of the beholder. What is protecting health and safety or social concerns on one side can often be viewed as protectionist on the other. It's a thorny issue and has persisted and been a problem for that very reason, but there is progress being made. There is international best practice and, fortunately, work on that is being done in Canada.