Another good example is the fact that every rail car that travels over the border goes through this X-ray machine, which is a lot compared to what happens for trucks. But to give you an example, at CN, a big portion of our business is cross-border coming in and going out. We'll measure the delays by the hour. So any of our trains that is delayed by more than an hour at a border crossing will get flagged. What makes it important to us and successful is that we track it very, very closely and we develop relationships with both Canada and U.S. customs to make sure that when that train delay is over an hour at the border a phone call is made to ask what the issue is and what happened, and then we try to fix it.
So both CN and CP realize that the thickness of the border is crucial to our competitiveness in North America and if Canada wants to be the gateway to North America that border's got to be kept as seamless as possible. We've spent a lot of time working at it.
As we speak today, as Robert said, it's not a big issue, because we manage it and follow it so closely.