gary scott smith look at religion has influence lives and policies of presidents in religion in the oval office. >> look for these titles in bookstores this coming week and watch for the authors in the near future on booktv. >> you are watching booktv and c-span2. nonfiction books and authors every weekend booktv, television for serious readers. >> we bring you coverage of the 20th annual virginia festival of books with panels on vietnam, politics, corruption and the climate. on afterwards peter wallace and argues government housing policies caused the 2008 financial crisis. eric stackhillsback discusses isis and geoffrey sax on achieving a sustainable energy goal and grow more fair and a report on two decades of academic fraud at the university of north carolina. for complete television schedule visit booktv.org. booktv 48 hours of nonfiction books and authors, television for serious readers. >> here is a look at the upcoming book fares and festivals happening around the country. this weekend the city of new orleans is hosting the tennessee williams literary festival. nick, the san anto