Secular surge. (Photo credit: Bruce F Press Photography) The United States is experiencing a secular surge. The largest “religious” group in the country is people with no religious affiliation — a stunning change, given that the U.S. has historically been a highly religious nation. New research by David Campbell, the Packey J. Dee Professor of American Democracy at the University of Notre Dame, and Geoffrey Layman, professor of political science, shows a lot of diversity among this growing secular population. Many people without a religion still believe in God, for example. However, a g...