It's a realm of making sure the economic environment...and that includes a number of variables. One is the infrastructure issue—we've talked a bit about that today—and making sure that Canadian refineries have access to a diversified supply of crude, where they can make crude selection choices based on availability, quality, and price. Their choices are much more limited in eastern Canada right now; certainly, that's a factor.
The other factor, which we haven't talked about, is the kind of regulatory environment we have. There are regulatory pressures. That's not to say that increasingly stringent environmental performance requirements are wrong. We have a very strong record of continuous improvement in our environmental performance.
We can look at how Canada, whether at the provincial level or federal level, imposes new regulatory requirements on our refining sector. We want an approach that is clearly validated by solid cost-benefit analysis, that we're investing money that's going to deliver value, an improved environment, and improved Canadian human health. We want it to be done in a way that recognizes that we can't eat the elephant all in one bite, sets some priorities, and paces new regulatory requirements in a way that they are digestible by the industry.
Let's not forget that we compete in an environment where other jurisdictions may have different environmental requirements. For the most part, we need to ensure that we look at alignment. To Canada's credit, and most provinces, we've done a very good job of making sure that the substance and pace of our environmental regulation is largely aligned with that of the U.S. They're certainly our significant competitor.
There are definitely things that government can do in terms of helping to create the kind of economic and regulatory environment, and infrastructure environment, that sustains a viable and competitive Canadian refining sector.