Very briefly, on your question about the cost of non-tariff barriers, some studies have been done that suggest they may be even more costly than tariff barriers. There are examples of re-inspection of product going across the border. You have to account for the delays and the time, and sometimes you might even have lost product because the product is perishable and it gets held up at the border.
I think it's recognized that it has a significant cost, and I think some studies have indicated that it may be as high as, or even higher than, some of the tariff barriers that are in place. That would suggest that it is extremely important to have it dealt with as we move forward.