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.

Maggie Gallagher is president of the Institute for Marriage and Public Policy in Washington. D.C. and a co-author of The Case for Marriage.

The Islamic Center of Northridge in Northridge, Calif., maintains two local mosques.

Michael Galloway is the chairman of Your Catholic Voice, a conservative Catholic group that supports a constitutional ban on same-sex marriage.

The Los Angeles Latino Muslim Association provides information about Islam to the Southern California Latino community.

Pastor John C. Hagee is the founder and senior pastor of Cornerstone Church in San Antonio, Texas, and the founder and president of John Hagee Ministries.

Ahmed E. Souaiaia is associate professor of Islamic studies at the University of Iowa in Iowa City. He teaches a course on Islamic law and is the author of Contesting Justice: Women, Islam, Law and Society.