The atmosphere has definitely changed in favor of some form of regulation of greenhouse-gas emissions in the U.S. since the Democrats took control of Congress and the Presidency last November. On June 26, the House passed the American Clean Energy and Security Act of 2009 (H.R. 2454) by seven votes, and Senators Barbara Boxer (D-Calif.) and John Kerry (D-Mass.) on Sept. 30 introduced a Senate version that is even stronger.
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