State of California sues EPA over tailpipe emissions

The State of California sued the EPA over failing to act on a tailpipe emissions waiver request. Fourteen other states will join California in the suit as interveners including Massachusetts, New York, Arizona, Connecticut, Illinois, Maine, Maryland, New Jersey, New Mexico, Oregon, Rhode Island, Vermont, Washington and Pennsylvania. California Air Resources Board filed the waiver on December 21, 2005 and six months ago they warned they would sue. You can watch the video announcing the suit at Governor Schwarzenegger's website.
[Source: Office of the Governor]