On May 18, NASF signed on with more than forty organizations to a joint letter to U.S. House of Representatives Committee on Energy and Commerce and Subcommittee on Energy and Environment leadership urging the inclusion of forestry offsets in the American Clean Energy and Security Act of 2009 (Waxman-Markey). This is part of NASF's ongoing work with the Forest Climate Working Group coalition to ensure recognition of forestry in practical and effective federal climate change legislation.