Watch the Event in QuickTime (M4V)

The Environmental Protection Agency now claims powers so broad that it can impose the most comprehensive, sweeping, and expensive regulatory regime in American history. These vast powers will be challenged in court on February 28 and 29, when the U.S. Court of Appeals for the District of Columbia hears oral arguments from the Coalition for Responsible Regulation on a petition to vacate EPA's greenhouse-gas emission standards for cars and light trucks, as well as regulations on "stationary" sources like power plants and factories. Current proposals range as high as 62mpg for cars.

The briefs of 67 petitioners have been consolidated into a single filing that will be the subject of argument. Petitioners will argue that the EPA is in gross violation of the Clean Air Act, that the proposed regulations will have no detectable effect on global temperature or carbon dioxide concentrations, and that they impose "extraordinary costs, burdens, and other adverse consequences."

On March 1, following their Court appearance, petitioners in this landmark legal action will speak at the Cato Institute on the case and its historic implications. We hope you will join us in what promises to be an exceptionally compelling event.