Citations for Tuesday's show are listed after the jump.
Documents: U.S. mining data from 9 leading Internet firms; companies deny knowledge
NSA taps in to internet giants' systems to mine user data, secret files reveal
Understanding the Iran-Contra Affairs
Total Information AWareness (TIA) System
Senate Rebuffs Domestic Spy Plan
Librarians protest monitoring of library patrons under Patriot Act
Libraries Rally Against USA Patriot Act
Libraries protest potential snooping Patriot Act makes access to records too easy, they say
America's Most Dangerous Librarians
Four Librarians Finally Break Silence in Records Case
NSA has massive database of Americans' phone calls
Bush signs controversial wiretap bill, calls for permanent fix
Foreign Intelligence Surveillance Court
NSA collecting phone records of millions of Verizon customers daily
Verizon forced to hand over telephone data – full court ruling
Dianne Feinstein on NSA: ‘It’s called protecting America’
Patriot Act author ‘extremely troubled’ by NSA phone tracking
Senators: NSA phone sweeping has been going on since 2007
Wyden-Udall letter to Attorney General Holder (pdf)
FISA Warrantless Wiretapping Program Renewed By Senate
NSA Collection Of Verizon Phone Records Defended By Top Senators
Every Tech Company Is Denying NSA Spying
Pat Sajak: Obama really messed up
IRS targeted groups critical of government, documents from agency probe show
TREASURY INSPECTOR GENERAL FOR TAX ADMINISTRATION
Updated: AP responds to latest DOJ letter
FBI spied on Fox News reporter, accused him of crime
U.S. Is Secretly Collecting Records of Verizon Calls
April 9, 2013 - Obama’s drone war kills ‘others,’ not just al Qaida leaders