Book excerpt: Congress has been debating a range of potential initiatives for reducing atmospheric CO2 from U.S. sources. Legislative proposals would seek to limit U.S. CO2 emissions to historical levels through emissions caps, carbon taxes, or other mechanisms. In the 110th Congress, the most prominent CO2 proposals sought reductions of nationwide CO2 emissions to 1990 levels or lower by 2030. Contents of this report: (1) Energy Efficiency and Conservation; (2) Renewable Energy; (3) Nuclear Power Generation; (4) Advanced Coal-Fired Power Generation; (5) Carbon Capture and Sequestration; (6) Plug-in Electric Hybrid Vehicles; (7) Distributed Energy Resources; (8) Policy Issues for Congress; (9) Conclusion. Illus. A print on demand report.