He teaches, publishes and researches in the field of American religions and is the author of “Making the American Religious Fringe: Exotics, Subversives, and Journalists, 1955-93” (2004), “Divine Hierarchies: Class in American Religion and Religious Studies” (2007) and co-editor of “Religion and Class in America: Culture, History, and Politics” (2009). His current book project is on a branch of evangelicals that practice spiritual warfare against demons that they believe reside in human bodies, material objects and certain geographic locations. It is tentatively titled “American Possessions: Consuming Religions and Fighting Demons in the Contemporary United States.”