Ruling would essentially allow for the creation of a de facto national policy.

"Governors want to expand state regulation of greenhouse gases in hopes of increasing pressure for federal action on global warming, the chairman of the National Governors Association said Wednesday. Gov. Tim Pawlenty, R-Minn., said in an Associated Press interview that getting more states to limit greenhouse gases is a priority among clean energy issues for the group. Others include spurring energy conservation and broadening use of renewable fuels such as ethanol."

Associated Press, September 13, 2007.

http://ap.google.com/article/ALeqM5giGyNMdOuDMPhOKFDjLWJbcKzHLg