Many on the Catholic right agreed with a statement from Pope Paul VI in 1972 that the mainstream Catholic Church had fallen into decline. In this work, the author explores what these fundamentalists believed the cause to be and how they planned to halt its spread. From conservatives and their steadfast moral militancy, to separatists and their belief in the need for alternative communities, to Marianists and their tenets of mystical prophecy, Cuneo portrays the motivations of these individuals who have taken as their task the preservation of authentic Catholicism in North America.