From left: Deputy Attorney General James Cole; Chris Inglis, deputy director of the National Security Agency; Gen. Keith B. Alexander, director of the National Security Agency; Sean Joyce, Deputy Director of the FBI; and Robert Litt, general counsel to the Office of the Director of National Intelligence, testify before the House Permanent Select Committee on Intelligence in Washington on June 18, 2013, regarding NSA surveillance. (Associated Press)

Photo by: Charles Dharapak

From left: Deputy Attorney General James Cole; Chris Inglis, deputy director of the National Security Agency; Gen. Keith B. Alexander, director of the National Security Agency; Sean Joyce, Deputy Director of the FBI; and Robert Litt, general counsel to the Office of the Director of National Intelligence, testify before the House Permanent Select Committee on Intelligence in Washington on June 18, 2013, regarding NSA surveillance. (Associated Press)