There are two sides to that answer, cargo and people. In terms of cargo, most of that would be expressed through the movement of containers that would come in through one of our container ports: Halifax, Montreal, Prince Rupert, or Vancouver. If additional security or screening requirements were imposed on cargo movements, that would serve to thicken the border by slowing the processing and increasing the time getting the box off the ship and down to its intended destination. Currently, we operate at a much higher level of security than the Americans. For example, 100% of our containers run through radiation portal screenings. We have a comparatively high level of secondary screening. So we have very high security procedures in place already; however, additional regulatory requirements would serve to slow things down.
Similarly, on the person side, on cruise passengers, especially in the St. Lawrence Seaway and the Great Lakes, but even up on the coast, when you have ships that leave the United States on itineraries that come up into Canada or through the Great Lakes and the St. Lawrence Seaway, where they essentially bounce back and forth between Canadian and American ports, one of the issues is that we constantly have to clear people as the passengers cross the border. This simply becomes a disincentive. That would be another example of thickening.