Mark J. Miller is the Emma Smith Morris Professor of political science and international relations at the University of Delaware. His research focuses on comparative immigration and refugee policies, global migration and migration and security.

J. Ligon Duncan is minister of First Presbyterian Church in Jackson, Miss. He was professor of theology at Reformed Theological Seminary (RTS) and was responsible for teaching courses such as Systematic Theology, Ethics, Apologetics, History of Philosophy and Christian Thought, Covenant Theology, Patristics, Evangelism, and Theology of the Westminster Standards

Elaine Heath is McCreless Assistant Professor of Evangelism at Perkins School of Theology at Southern Methodist University in Dallas.

George J. Borjas is the Robert W. Scrivner Professor of Economics and Social Policy at Harvard University’s Kennedy School of Government. An immigrant from Cuba, he is the author of Heaven’s Door: Immigration Policy and the American Economy (Princeton University Press, 1999) and supports restrictions on immigration.

Roger Olson is an expert in historical theology and professor of religion at Baylor University’s Truett Theological Seminary in Waco, Texas. Olson co-chairs the evangelical theology group of the American Academy of Religion. He wrote the “theology of evangelicalism” entry in the Encyclopedia of Protestantism (Routledge, 2004).

Danielle Grubb Shroyer is pastor of Journey Community Church in Dallas. She serves on the national Emergent Coordinating Group in the area of social justice. She is the author of The Boundary-Breaking God:  An Unfolding Story of Hope and Promise (Jossey-Bass, 2009).

Alan Creech has been blogging about his life in the church since 2002; he is a founding member of Vine + Branches Christian Community, an emerging community in Lexington, Ky.

Liz Buxton is pastor at Cedar Grove and Harmony United Methodist churches in Alton, Va. She is working to connect women in the emergent church movement (they call themselves (f)emergents).

Lauren F. Winner is the author of numerous books, including the popular Girl Meets God: A Memoir (Random House, 2003), about coming to Christianity in her 20s. She holds a Ph.D. in the history of American religion and lives in Durham, N.C.