The signatories to the brief are the American Humanist Association (publisher of the Humanist), the American Ethical Union, the Association of Humanistic Rabbis, Atheist Alliance International, the Covenant of Unitarian Universalist Pagans, Equal Partners in Faith, the Humanist Society, the Humanist Institute, HUUmanists, the Institute for Humanist Studies, the International Humanist and Ethical Union, Internet Infidels, the National Center for Science Education, the Secular Coalition for America, Skeptics Society, the Society for Humanistic Judaism, and the Unitarian Universalist Association.
are the American Ethical Union, founded in the late 19th century, with about 40 Ethical Societies holding weekly meetings; the American Humanist Association, founded in 1941; the Society for Humanistic Judaism, founded in 1969; the Fellowship of Religious Humanists, founded in the late 1960s; and the Council on Democratic and Secular Humanism, founded in 1979.
Organizationally, humanism is largely identified with the American Humanist Association, the American Ethical Union, the Council for Secular Humanism, the Society for Humanistic Judaism, and smaller groups.
On its founding board were humanist leaders affiliated with the American Ethical Union; the American Humanist Association; the Council for Democratic and Secular Humanism (now the Council for Secular Humanism); the Fellowship of Religious Humanists (now Friends of Religious Humanism), an affiliate of the Unitarian Universalist Association; the Humanist Association of Canada; and the Society for Humanistic Judaism.
The American Humanist Association joined in one of the supportive amicus briefs with the Unitarian Universalist Association, Americans for Religious Liberty, the Episcopal Diocese of Newark, the Society for Humanistic Judaism, the Congress of Secular Jewish Organizations, the Cathar Church, and twenty nine clergy and scholars representing Unitarian Universalist, Episcopal, United Methodist, Presbyterian, United Church of Christ, Jewish, Catholic, and Baptist traditions.
Our disarray was forecast with the founding of the Free Religious Association, of Ethical Culture, of the Western Unitarian Conference, of the American Humanist Association, of the Fellowship of Religious Humanists, and more recently of the Society for Humanistic Judaism and the Committee for Democratic and Secular Humanism.
Among the organizations attempting to provide them are the Congress of Secular Jewish Organizations and the Society for Humanistic Judaism, which are based in the United States and Canada.