FBI Director Robert Mueller testifies Wednesday on Capitol Hill on the bureau's counterterrorism efforts. During the hearing, Senate Judiciary Committee Chairman Patrick Leahy confronted Mueller on a report that was released by the Justice Department's Office of the Inspector General saying the FBI illegally obtained thousands of Americans' telephone records during the Bush administration. Mandel Ngan/AFP/Getty Images hide caption

itoggle caption Mandel Ngan/AFP/Getty Images