The Senate leadership's decision to stop pursuing legislation that would cap greenhouse-gas emissions is reigniting bipartisan efforts to block the Environmental Protection Agency from regulating industrial sources of carbon dioxide. "I would hope EPA would recognize that [curbing emissions] is a legislative function," said Rep. Gene Green, D-Texas. Meanwhile, a proposal by Sen. Jay Rockefeller, D-W.Va., for a two-year moratorium on the EPA's carbon rules could be taken up by the Senate as part of discussions on a scaled-back energy bill, according to a Democratic aide.

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