Ain't that the decillion dollar question?!
http://rinf.com/alt-news/breaking-news/why-doesnt-the-government-use-its-mass-surveillance-to-bust-the-big-criminals-the-banksters/50714/
Uh, bribery comes to mind. Blackmail, extortion, and all the rest. You know how it is. Lot's of links to click, but hey!
