Congressman Earl Blumenauer speaks at a press conference at the Cannon Building on May 2009 in Washington, DC. The US Congress has yet to pass a comprehensive plan on climate change but it is taking action on one front -- ordering an in-depth "carbon audit" of the tax code. Blumenauer said the audit was a "small but significant" sign the United States is serious about climate change.
(AFP/Getty Images/Kris Connor)