2nd Facebook whistleblower comes forward wanting to testify before Congress

LEGAL ANALYST/AUTHOR: John O'Connor, is author of Postgate: How the Washington Post Betrayed Deep Throat, Covered Up Watergate, and Began Today's Partisan Advocacy Journalism and host of The Mysteries of Watergate Podcast. He served as an Assistant U.S. Attorney in Northern California representing the United States in both criminal and civil cases