Sens. Joseph Lieberman, I-Conn., and John Warner R-Va., have introduced climate change legislation proposing mandatory greenhouse gas reductions.
The latest refinements to the Lieberman-Warner bill outline a cap-and-trade strategy to reduce emissions from covered sectors by 15% by 2020 and 70% by 2050. In addition, the bill has incorporated components of several other bills and proposals, including agricultural sequestration of carbon, improved building codes, and carbon capture and storage. Additional policies such as automobile efficiency, renewable energy standards and energy efficiency, currently passed by the House and Senate in the energy bill, may also complement a cap-and-trade program.