The States Taketh, The Feds Giveth Away

I have written extensively here on the federalism issues associated with regulating green buildings and climate change in general, which I believe is going to be a major factor in whether the United States can effectively manage climate change. In another example of the states regulating and the feds deregulating (or actually just preventing climate change laws from taking effect), Delaware made revisions to its state implementation plan under the Clean Air Act, making carbon dioxide a regulated pollutant. http://ehscenter.bna.com/PIC2/ehs.nsf/id/BNAP-7JEFLD EPA Region 3 approved Delaware's SIP with the carbon dioxide regulation in place. Now, the EPA is reconsidering the approval of Delaware's SIP.