Dr. Anthony Campolo, commonly known as Tony Campolo, is an American sociologist, commentator, influential pastor, prolific writer and public speaker. He received widespread recognition after he agreed to serve as a spiritual consultant to President Bill Clinton. He has appeared on numerous programs as a guest including Larry King Live, Politically Incorrect, Crossfire and Nightline. Campolo is against same-sex marriage and abortion. He believes that homosexuality is a sin if practiced, though not as a sexual orientation. He has authored over 30 books. He is the head of the Red-Letter Christian movement, which expounds on the wisdom of Jesus. Currently, he serves as an associate pastor at the Mount Carmel Baptist Church.