Executive Order (EO) 13355 is a United States Presidential executive order signed on August 27, 2004, by President George W. Bush. Its goal was "Strengthened Management of the Intelligence Community". It supplemented and partially superseded Executive Order 12333, signed in 1981 by President Ronald Reagan, and was in turn partially supplemented and superseded by Executive Order 13470.
The FISA Amendments Act of 2008, also called the FAA and Foreign Intelligence Surveillance Act of 1978 Amendments Act of 2008, is an Act of Congress that amended the Foreign Intelligence Surveillance Act. It has been used as the legal basis for surveillance programs leaked by Edward Snowden in 2013, including PRISM.