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Carl Pope, executive director of the Sierra Club, front left, ...

Wed Dec 9, 4:46 PM ET

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Carl Pope, executive director of the Sierra Club, front left, and Gene Karpinski, president of the League of Conservation Voters, front right, stand with business leaders and environmentalists as they speak to reporters after their meeting with President Barack Obama regarding clean energy and climate change at the White House in Washington, Wednesday, Dec. 9, 2009.

(AP Photo/Charles Dharapak)