US intelligence agencies have sprung so many leaks over the last few years—black sites, rendition, drone strikes, secret fiber taps, dragnet phone record surveillance, Internet metadata collection, PRISM, etc, etc—that it can be difficult to remember just how truly difficult operations like the NSA have been to penetrate historically. Critics today charge that the US surveillance state has become a self-perpetuating, insular leviathan that essentially makes its own rules under minimal oversight. Back in 1975, however, the situation was likely even worse. The NSA literally "never before had an oversight relationship with the Congress." Creating that relationship fell to an unlikely man: 30 year old lawyer L. Britt Snider, who knew almost nothing about foreign intelligence.
Snider was offered a staff position on the Church Committee, set up by Congress in 1975 to function as a sort of Watergate-style inquiry. This initiative focused on CIA subversion of foreign governments and spying on American citizens, recently revealed in the New York Times by noted investigative reporter Seymour Hersch. Congressional "oversight" of intelligence agencies was, at the time, nearly useless, as the Senate's official history of the Church Committee notes:
For the rest of the story: http://arstechnica.com/tech-policy/2013/06/how-a-30-year-old-lawyer-exposed-nsa-mass-surveillance-of-americans-in-1975/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+arstechnica%2Findex+%28Ars+Technica+-+All+content%29