- Family Research Council (FRC)
- Fraternal Order of Police (FOP)
- Gray Panthers
- Greenpeace USA
- Handgun Control, Inc. (HCI)
- Health Insurance Association of America (HIAA)
- Human Rights Campaign (HRC)
- Humane Society of the United States (HSUS)
- Independent Insurance Agents of America (IIAA)
- International Association of Machinists and Aerospace Workers (IAM)
- International Brotherhood of Electrical Workers (IBEW)
- International Brotherhood of Teamsters (IBT; Teamsters)
- Japanese American Citizens League (JACL)
- John Birch Society (JBS)
- Knights of Columbus (K of C)
- Knights of the Ku Klux Klan (KKKK)
- Laborer's International Union of North America (LIUNA)
- Lambda Legal Defense and Education Fund (LLDEF)
- League of Women Voters of the United States (LWV)
- Morality in Media (MIM)
- Mothers Against Drunk Driving (MADD)
- Motion Picture Association of America (MPAA)
- National Abortion and Reproductive Action League (NARAL)
- National Academy of Sciences (NAS)
- National Association for the Advancement of Colored People (NAACP)
- National Association of Broadcasters (NAB)
- National Association of Home Builders (NAHB)
- National Association of Letter Carriers (NALC)
- National Association of Life Underwriters (NALU)
- National Association of Manufacturers (NAM)
