David Corn - Veteran Washington journalist, investigative reporter and political commentator. He is the Washington bureau chief for Mother Jones magazine and an analyst for MSNBC. He is the author or co-author of four New York Times bestsellers. He joins Tavis for a conversation about the wild and harrowing story of the Republican Party’s decades-long relationship with far-right extremism, bigotry, and paranoia as outlined in his new book “American Psychosis: A Historical Investigation of How the Republican Party Went Crazy.”