Philip Hamburger is the Maurice and Hilda Friedman Professor of Law at Columbia Law School in New York.  He wrote the book Separation of Church and State (2002).

Melissa Rogers is a nonresident senior fellow in governance studies for Brookings, where she specializes in the First Amendment’s religion clauses and religion and faith-related political issues. She previously served as special assistant to President Barack Obama and executive director of the White House Office of Faith-based and Neighborhood Partnerships.

Barry Lynn is executive director of Americans United for the Separation of Church and State, a lobbying group based in Washington, D.C.

Dennis Martin is an associate professor of theological history at Loyola University in Chicago and an expert on papal history and Pope John Paul II’s life, history and writings.

The Rev. Steven M. Avella is associate professor of history at Marquette University in Milwaukee and an expert on American Catholic history and the history of the American West.

John Norris is a theology professor at the University of Dallas and an expert on Catholic history and the teachings of John Paul II.

Charles E. Curran is the Scurlock Professor of Human Values at Southern Methodist University in Dallas. He specializes in moral theology, social ethics and the role of the church as a moral and political actor in society. He is a liberal theologian who was dismissed from Catholic University of America for his teachings on human sexuality after […]

The Rev. William F. Maestri is a theologian and spokesman for the Archdiocese of New Orleans with a specialty in bioethics. He can talk about Pope John Paul II’s philosophical defense of human dignity in all contexts — medical, economic, etc.

The Rev. Peter J. Bernardi is an associate professor of religious studies at Loyola University in Chicago. He can talk about the papacy in the contemporary world. He contributed an essay to the collection in Catholicism Contending With Modernity: Roman Catholic Modernism and Anti-Modernism in Historical Context.