This post was written by Competitive Enterprise Institute General Counsel Sam Kazman

EPA’s global warming regs are being challenged in a complex set of cases pending in the U.S. Court of Appeals for the D.C. Circuit.  At issue are rules ranging from EPA’s underlying endangerment ruling to its decrees on stationary and vehicle greenhouse gas emissions.  A number of petitions for reconsideration were filed with the agency as well, several of them based on the Climategate materials.  EPA denied those petitions last summer in a voluminous document which is also part of the litigation.

Among those suing EPA are states, trade associations, public interest groups (including CEI) and individual companies. If you count each separate action brought by each petitioner (including CEI) against each rule, there are 85 cases.

The petitioners tried to have the regulations put on hold until the court decides the cases, but their motion was denied back in December.  Both sides have filed suggestions on how the briefing of the cases should proceed, since the court will require almost everyone to file joint briefs.  Once the court issues its schedule and format for the briefs, the cases will start moving forward again.