It takes a number of different approaches. We have approaches that deal with issues right at the border, with customs and trade facilitation, to ensure that getting through customs and claiming preferences under NAFTA and all of those processes are as simple and automatic as possible, so that when people arrive at the border they're not delayed, that the processes have already been taken care of and they can get right through without delay.
A lot of what we're also doing takes place well away from the border, having to do with regulatory co-operation, or regulatory harmonization in some cases, so that there isn't a difference between the kinds of requirements for a product in the U.S., for example, and in Canada. Again, that reduces any delays moving products back and forth across the border.