Well, the time has come for public comment. Let the EPA know what you think about Massachusetts v. EPA. If you need a little refresher, read posts by Marlo Lewis here, here, and here.

The Advance NoticeThe ANPR is one of the steps EPA has taken in response to the U.S. Supreme Court’s decision in Massachusetts v. EPA. The Court found that the Clean Air Act authorizes EPA to regulate tailpipe greenhouse gas emissions if EPA determines they cause or contribute to air pollution that may reasonably be anticipated to endanger public health or welfare. The ANPR reflects the complexity and magnitude of the question of whether and how greenhouse gases could be effectively controlled under the Clean Air Act.
The document summarizes much of EPA’s work and lays out concerns raised by other federal agencies during their review of this work. EPA is publishing this notice at this time because it is impossible to simultaneously address all the agencies’ issues and respond to the agency’s legal obligations in a timely manner.
Key Issues for Discussion and Comment in the ANPR:
Descriptions of key provisions and programs in the CAA, and advantages and disadvantages of regulating GHGs under those provisions; How a decision to regulate GHG emissions under one section of the CAA could or would lead to regulation of GHG emissions under other sections of the Act, including sections establishing permitting requirements for major stationary sources of air pollutants; Issues relevant for Congress to consider for possible future climate legislation and the potential for overlap between future legislation and regulation under the existing CAA; and, Scientific information relevant to, and the issues raised by, an endangerment analysis. EPA will accept public comment on the ANPR for 120 days following its publication in the Federal Register. . . .
How to CommentComments should be identified by the following Docket ID Number: EPA-HQ-OAR-2008-0318 Comments should be submitted by one of the following method www.regulations.gov: Follow the on-line instructions for submitting comments. Email: [email protected] Fax: 202-566-9744 Mail: Air and Radiation Docket and Information Center, Environmental Protection Agency, Mailcode: 2822T, 1200 Pennsylvania Ave., NW., Washington, DC 20460. In addition, please mail a copy of your comments on the information collection provisions to the Office of Information and Regulatory Affairs, Office of Management and Budget (OMB), Attn: Desk Officer for EPA, 725 17th St. NW., Washington, DC 20503. Hand Delivery: EPA Docket Center, EPA West Building, Room 3334, 1301 Constitution Ave., NW, Washington DC, 20004. Such deliveries are only accepted during the Docket’s normal hours of operation, and special arrangements should be made for deliveries of boxed information.