• American Rivers
• Beyond Pesticides
• Center for Progressive Reform
• Center for Public Environmental Oversight
• Defenders of Wildlife
• Earth Island Institute
• Earthjustice Legal Defense Fund
• Environmental Defense
• Environmental Defense Center
• Environmental Law Alliance Worldwide (E-Law)
• Environmental Law Institute
• Environmental Working Group
• Friends of the Earth
• Greenpeace
• League of Conservation Voters
• Midwest Environmental Advocates
  
• National Audubon Society
• National Wildlife Federation
• Natural Resources Defense Council
• The Nature Conservancy
• OMB Watch
• Public Interest Research Groups
• Rainforest Action Network
• Sierra Club
• Union of Concerned Scientists
• The Wilderness Society
• World Resources Institute
• World Wildlife Fund