"Congressional interest in climate change legislation has grown in recent years. In the 110th Congress, Members have introduced numerous bills that directly address various aspects of climate change. These bills cover a wide spectrum, ranging from climate change research to comprehensive greenhouse gas (GHG) emissions cap-and-trade programs. Additional bills focus on GHG reporting or registration, or on power plant emissions of carbon dioxide (CO2) as part of wider controls on pollutant emissions. […].Within several broad categories, climate change legislation varies in its approach to climate change issues. For example, some bills covering research issues focus solely on modeling the effects of future climate change, whereas others address the development of monitoring systems. Bills focusing on technology deployment do so through tax incentives and credit-based programs within the United States or by promoting technology deployment in developing countries. Bills that include GHG registries are designed either as a part of a larger reduction bill or as a method for establishing a baseline for some future reduction program. Bills with mandatory emission reductions differ by the entities covered, the gases limited, and the emission targets required. This report briefly discusses the basic concepts on which these bills are based, and compares major provisions of the bills in each of the following categories: climate change research; emissions reduction technologies; U.S. actions pursuant to international emission reduction agreements; adaptation to the effects of climate change; GHG reporting and registration; and GHG emissions reduction programs."
CRS Report for Congress, RL34067