web | Brian Fung | Washington Post | 2017-04-04 | |
web | Kara Cook-Schultz | U.S. PIRG | 2017-03-29 | |
web | Barton Gellman and Laura Poitr... | Washington Post | 2013-06-07 | |
web | James Bamford | WIRED | 2012-03-15 | |
web | ACLU | 2007-02-07 | ||
web | Eric Lichtblau and James Risen | New York Times | 2005-12-24 |