The climate bill unveiled by Sens. John Kerry, D-Mass., and Joseph Lieberman, I-Conn., exhibits the "complex" ties between the country's energy system and carbon emissions, according to the American Petroleum Institute. Jack Gerard, president and CEO of API, cited the bill's differences with the House's version, saying that fact "was imperative." But API and the U.S. Chamber of Commerce said they needed to evaluate the economic effects of the bill.
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