In this June 6, 2013 file photo, the sign outside the National Security Administration (NSA) campus in Fort Meade, Md. (AP Photo/Patrick Semansky, File)
In this June 6, 2013, file photo, a sign stands outside the National Security Administration (NSA) campus in Fort Meade, Md. (AP Photo/Patrick Semansky, File)
FILE - This Thursday, June 6, 2013, file photo, shows a sign outside the National Security Administration campus in Fort Meade, Md. The U.S. government is close to ending the NSA’s nationwide bulk collection of American phone records with an overwhelming House vote that is the most significant demonstration to date of leaker Edward Snowden’s impact on the debate over privacy versus security. (AP Photo/Patrick Semansky, File)
FILE - This June 6, 2013, file photo, shows a sign outside the National Security Administration (NSA) campus in Fort Meade, Md. The Senate Intelligence Committee three years ago secretly considered, but ultimately rejected, alternate ways for the National Security Agency to collect and store massive amounts of Americans’ phone records, The Associated Press has learned. (AP Photo/Patrick Semansky, File)
FILE - This Thursday, June 6, 2013, file photo, shows a sign outside the National Security Administration (NSA) campus in Fort Meade, Md. The New York Times reported late Monday, March 24, 2014, that the Obama administration this week will propose that Congress overhaul the NSA's electronic surveillance program. (AP Photo/Patrick Semansky, File)
** FILE ** This Thursday, June 6, 2013, file photo, shows a sign outside the National Security Administration (NSA) campus in Fort Meade, Md. (AP Photo/Patrick Semansky, File)
** FILE ** This June 6, 2013, file photo, shows a sign outside the National Security Administration (NSA) campus in Fort Meade, Md. Freed by a recent legal deal with government lawyers, major technology firms released new data Monday, Feb. 3, 2014, on how often they are ordered to turn over customer information for secret national security investigations. (AP Photo/Patrick Semansky, File)