What: A federal limit on greenhouse gas emissions combined with a regulated market in emissions credits. For instance, the Kerry-Boxer bill of last congress, or Warner-Lieberman or McCain-Lieberman of previous Congresses. The Kyoto Protocol, if the U.S. had ratified it, would have mandated such a law.

How GE lobbied for it: Immelt was a leading player — perhaps the leading player — in the U.S. Climate Action Partnership, a lobbying coalition of Big Business and green groups pushing for cap-and-trade. Immelt repeatedly called for cap-and-trade, saying on at least one occasion, “we must put a price on carbon.” GE lobbying filings also consistently show the company lobbying on climate issues.