He is a senior editor at Reason magazine. He is the author of This Is Burning Man: The Rise of a New American Underground (Little, Brown, 2004), Radicals for Capitalism: A Freewheeling History of the Modern American Libertarian Movement (PublicAffairs, 2007), Gun Control on Trial: Inside the Supreme Court Battle Over the Second Amendment (Cato Institute, 2008), and Ron Paul’s Revolution: The Man and the Movement He Inspired (Broadside Books, 2012).