Steven Green is associate professor of law at Willamette University in Salem, Ore., and former general counsel to Americans United for Separation of Church and State. He has litigated cases involving school prayer, religious school funding, religious displays and religious discrimination.

Richard Foltin is director of national and legislative affairs for the American Jewish Committee’s Office of Government and International Affairs in Washington, D.C.

Edd Doerr is president of Americans for Religious Liberty, a separationist organization based in Silver Spring, Md.

Michael Cromartie is vice president of the Ethics and Public Policy Center in Washington, D.C., where he heads its Evangelicals in Civic Life program. He is also an expert on religious liberty and Christianity and politics. His books include, as editor, Religion and Politics in America: A Conversation.

Cheryl Townsend Gilkes is a professor of sociology and African-American studies at Colby College in Waterville, Maine. She is an expert on black churches. She has written widely, including If It Wasn’t for the Women: Black Women’s Experience and Womanist Culture in Church and Community (Orbis Books, 2000).

Stephen Bainbridge is a professor of law at the University of California at Los Angeles. He has written about the Roman Catholic bishop in Colorado Springs who sent out a church letter saying Catholics should not receive communion if they voted for politicians who supported abortion rights.

Donald Tobin is associate dean for faculty at Ohio State University’s Michael E. Moritz College of Law. He is an expert on religious organizations and the federal tax exemption.

John D. Colombo is a professor at the University of Illinois College of Law in Champaign, Ill. He has proposed a theoretical and practical system for determining when nonprofit entities should receive tax exemptions.

Gina Torielli is director of the graduate tax program at the Thomas M. Cooley Law School in Lansing, Mich. She is an expert on tax-exempt organizations.