Sure. It's no surprise to anybody on this committee that many of the large city airports are in close proximity to the U.S. border.
It goes back to the user-pay model that I spoke to earlier, which forces significant fees through to the users. In another jurisdiction, such as the United States, where airports and air travel are not viewed as a tax-generator for general revenues, as far as I understand it, those fees and charges are much less. If a family of four, five or six—multiplied by a few hundred dollars and fees per person—is looking to avoid that, they could go elsewhere. It becomes a competitiveness issue that will then have an impact on a rather critical industry for bringing goods and people across a country as large as ours. It's certainly a question worthy of further study.