Has offices in Lombard, Ill. and Roseville, Cali. Family of churches in the U.S. and Canada. Church planting is an emphasis.

Based in Colorado Springs, Colo. Claims membership of over 4 million people in 13,609 churches in 81 countries and territories including more than 2,000 churches in the United States. Contact Rev. William (Bill) W. Malick, director of church multiplication ministries.

An evangelical church committed to church planting and world missions based in Fort Wayne, Ind.

Has network of over 1,500 churches worldwide. They work alongside existing local churches to help reproduce and plant new Vineyard churches. Michael Gatlin is the national church planting director.

Web company based in Oklahoma City, Okla. that works with church plants.

A church-planting support ministry begun in 2002 by planters from New Life Christian Church in Centreville, Va. The nonprofit provides organizational resources, consulting and project management services for newly formed churches.

Frank Ravitch is chair of law and religion at Michigan State University and a scholar of constitutional religious freedom protections. He is author of  several books on the Constitution’s religion clauses, including Freedom’s Edge: Religious Freedom, Sexual Freedom, and the Future of America and Masters of Illusion: The Supreme Court and the Religion Clauses.

Frank Lambert is a history professor at Purdue University in West Lafayette, Ind., and author of The Founding Fathers and the Place of Religion in America (Princeton University Press, 2003).

Carl Esbeck is a professor of law at the University of Missouri in Columbia, where he specializes in First Amendment issues, especially the Establishment and Free Exercise clauses.