NSA Secrets

FILE - This June 6, 213 file photo shows the sign outside the National Security Agency (NSA) campus in Fort Meade, Md. The NSA has broken privacy rules or overstepped its legal authority thousands of times each year since Congress granted the intelligence agency broad new powers in 2008, The Washington Post reports. In one case, telephone calls from Washington were intercepted when the city's area code was confused with the dialing code for Egypt.  (AP Photo/Patrick Semansky, File)

Revelations and reaction

The National Security Agency has been forced to respond to unprecedented disclosures about its surveillance programs. Those programs have been assailed as a violation of privacy rights by critics and defended as critical to U.S. national security by intelligence officials. Explore our coverage.