Congress is voting on the big energy bill next week. But the latest version of the energy bill would repeal a key part of the Clean Air Act -- arguably the most important environmental law in American history.

Sign a petition to your Senators and Representatives at MoveOn.org.

Want to do more?  Donate to MoveOn.org's campaign to "make the bill live up to President Obama's vision" to fight against "dirty energy interests" who have spent $79 million this year lobbying Congress.