There's an interesting book that I've read about, but haven't picked up yet, called "Three Felonies A Day". It discusses the selective enforcement of vague statutes and the incredible number of said statutes. <a href="http://www.amazon.com/Three-Felonies-Day-Target-Innocent/dp/1594032556" rel="nofollow">http://www.amazon.com/Three-Felonies-Day-Target-Innocent/dp/...</a>