Ronald Kessler, author of In the President's Secret Service, former Washington Post reporter, now chief Washington correspondent at Newsmax.com
Jeffrey Robinson, co-author of Standing Next to History: An Agent's Life Insude the Secret Service
After alleged misbehavior that involved prostitution, the U.S. Secret Service revoked top security clearances of 11 agents who have been put on administrative leave and remain under investigation. The agents were part of the advance team that traveled to Colombia before President Obama arrived to attend the Summit of the Americas. The scandal has focused attention on the training and standards typically upheld by the Secret Service.