The Exchange 4/22/08 IOWA (kuni) - Two men are touring the country, insisting that faith does not fit into a red-state, blue-state dichotomy. In their new film, Purple State of Mind, John Marks and Craig Detweiler explore American faith, politics and culture. Marks, a graduate of the University of Iowa Writers' Workshop, is the author of "Reasons To Believe: One Man's Journey Among the Evangelicals and the Faith He Left Behind." © Copyright 2013, kuni