"In the 110th Congress, the House and the Senate have passed different versions of omnibus energy legislation. The House originally passed H.R. 6 in January 2007. The Senate passed an amended version in June 2007. In August 2007, the House passed a new and broader-ranging omnibus energy bill, H.R. 3221. On December 6, 2007, the House substituted the Senate's text of H.R. 6 with an amendment containing many provisions from H.R. 3221 and some from Senate-passed H.R. 6. This report compares climate-related provisions in the current energy legislation. Most provisions of H.R. 3221 that specifically addressed climate change were omitted from the House's substitute. However, a few climate-related provisions in the latest House-passed H.R. 6 are: development of carbon sequestration technologies, international programs to promote efficient and clean energy, and an Office of Climate Change and Environment in the Department of Transportation. Key differences remain between the House-passed and Senate-passed bills. In addition, the Administration has threatened to veto legislation, such as House-passed H.R. 6, that includes a requirement for minimum content of renewable energy in electricity production and reduction of existing tax incentives for oil production. This report compares provisions specifically directed at climate change topics in recently passed omnibus energy legislation."