More than 100 bills, resolutions, and amendments focusing on climate change were introduced in the 112th Congress (2011-2012). Many more touched on energy, environment, transportation, agriculture and other areas that would have an impact on climate change. The list below, however, contains only those bills whose authors thought it was important to explicitly reference climate change or related terms, such as greenhouse gases (GHG) or carbon dioxide. (For brevity, all legislative proposals are referred to here as "bills.")
Reflecting an anti-regulatory mood on Capitol Hill, there were nearly as many proposals in the 112th Congress to block efforts to curb carbon emissions as proposals to strengthen them. And, reflecting the general state of gridlock in Congress, virtually none of the bills proposed were enacted.
A closer look:
Perhaps the most significant law enacted by this Congress addressing climate change is not on the list below because it does not mention the words "climate change" at all – the reauthorization of the National Flood Insurance Program . Among other things, the bill, signed into law by President Obama, seeks to ensure that "the best available science regarding future changes in sea levels, precipitation, and intensity of hurricanes" are factored into future calculations of flood risk. Our blog notes that the bill is a good first step toward comprehensive reform that will bring the program back to solvency.
In addition, a bill that would combine House and Senate energy efficiency measures  passed the Senate on its last day before the elections and was signed by President Obama in December 2012.
The bills, resolutions, and amendments of the 112th Congress dealing with climate change are divided into the following categories: