I'm not as familiar with the U.S. system as ours, but one of the concerns in the United States is that their system as its being developed—and it's a very fluid situation down there, with the Congress and what's being proposed—would increase the price of fuels such as natural gas, which would flow to energy intensive industries. That's one of the issues.
As well, there's the same issue that there are very limited opportunities for further efficiencies in the fertilizer industry, because our chemistry is very simple and the engineering is well developed. There are not a lot of magic bullets out there for our industry.