I think the settlement mechanism really wasn't dependent on NAFTA. It was a combination of a number of factors in terms of Canada's position in the agreement in terms of establishing trade that would conform to world international standards, and the U.S.'s ability, given the fact that they had some unilateral actions that were available to them through their U.S. Department of Commerce, that ultimately resulted in an agreement that both sides could live with. If you look at it since 2006, I think it has worked well. In fact, both parties agreed to extend it a year ago, and I think it was because there was a recognition that while it may not have been perfect, it was actually working.
On February 4th, 2014. See this statement in context.