Marshall Fitz is the director of immigration policy for the Center for American Progress (CAP), which is a progressive independent nonpartisan educational institute. Contact Fitz through the CAP communications director Crystal Patterson or through the email form on his CAP page.

Jeffrey S. Passel is a senior demographer for the Pew Hispanic Center, which has conducted research on Latino immigration patterns and Hispanic attitudes toward immigration policy.

The Rev. James Eblen is a professor emeritus in Seattle University’s school of theology and ministry who can speak about the papacy.

Christopher Ruddy is an associate professor of historical and systematic theology at the Catholic University of America in Washington, D.C. He wrote about the theology of Pope Benedict in a June 3, 2005, Commonweal magazine article titled “No Restorationist.”

Dennis Doyle is a professor of religious studies at the University of Dayton and a frequent commentator and author on Catholic issues and the papacy.

Rocco Palmo runs the blog Whispers in the Loggia, one of the most popular sites in the Catholic blogosphere. He is a frequently quoted expert on Vatican developments and was formerly a Philadelphia-based U.S. correspondent for The Tablet of London.

John S. Grabowski is an associate professor of religious studies at the Catholic University of America in Washington, D.C. He also has an expertise in women’s issues. He and his wife were appointed to the Pontifical Council for the Family by Pope Benedict XVI in the fall of 2009.

The Rev. John T. Ford is a professor at the school of theology and religious studies at the Catholic University of America in Washington, D.C.. He has often used Pope Benedict XVI’s books as texts in his courses on Christianity.

The Rev. Robert P. Imbelli is an associate professor emeritus of theology at Boston College and has written and commented widely on the theology and policies of Pope John Paul II and Pope Benedict XVI.