Charles A. Cesaretti is executive director of the Center for Sexuality and Religion, which helps faith communities sexual spiritual health and justice. It is based in Wayne, Pa.

Lou Sheldon is chairman of the Traditional Values Coalition, a conservative group that wants a constitutional amendment that would ban same-sex marriage, ban same-sex unions and ban gays from receiving benefits of any such unions.

Salim Yaqub is an associate professor of history at the University of California, Santa Barbara. He specializes in U.S. foreign relations and is a fellow at the Woodrow Wilson International Center for Scholars, where he wrote about the relationship between Americans and Arabs in the 1970s.

Robert Cochran Jr. is Louis D. Brandeis Professor of Law and director of the Institute on Law, Religion and Ethics at Pepperdine University in Malibu, Calif. He is the editor of Faith and Law: How Religious Traditions From Calvinism to Islam View American Law.

Beverly LaHaye is founder and chairman of the Concerned Women for America, a conservative group that opposes same-sex marriage.

Juan E. Campo is associate professor of religious studies at the University of California, Santa Barbara. He specializes in the comparative study of Islam, particularly in the Middle East and South Asia, and teaches courses on Islamic tradition; religion, politics and society in the Persian Gulf region; Islamic mysticism; and modern Islamic movements.

Glenn Stanton is the director for Family Formation Studies at Focus on the Family in Colorado Springs.

Alameda Islamica is a weblog run by an informal gathering of San Francisco Bay Area Latino Muslims. Their goal is to bring together hispanics with Islamic beliefs and to educate the community about the religion. They post information about gatherings and classes.

Cecilia Elena Rouse is a professor of economics and public affairs and dean of the Woodrow Wilson School of Public and International Affairs at Princeton University.