I want to bring up a point. In 2006 I was on a panel of the Government of Ontario. It was on transboundary air pollution, and it was an international panel with Americans and Canadians. It dealt with something that is part of our reality, and that is that the weather patterns do not respect borders.
In this particular case, it was a lot of airborne pollutants carried from the Ohio Valley that made their way up to southern Ontario. I was staggered to realize that there are billions of dollars in impact, not just to things like acid rain but also to the health of people who have breathing difficulties, to agriculture, and others.
To be fair, let's also point out that there are weather patterns that go the other way as well.
Is this something that should be taken up? You've talked about environmental issues, such as common pricing of carbon and things like that. What about the fact that we do export pollutants to each other on occasion?