Riled up about the U.S. EPA’s decision not to allow California to regulate vehicle greenhouse-gas emissions, Golden State Gov. Arnold Schwarzenegger has declared he will sue the agency “within the next three weeks.” At least eight other states that would have adopted the stricter emissions standards had the EPA allowed it have said they’ve got California’s back and will co-sue. Congressional Democrats, led by House Oversight and Government Reform Committee Chair Henry Waxman (D-Calif.), plan to launch an investigation into the EPA’s decision. There’s gonna be a rumble!

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