FILE In this June 6, 2013 file photo, a sign stands outside the National Security Agency (NSA) campus in Fort Meade, Md. The National Security Agency has begun winding down its collection and storage of American phone records this week after the Senate failed to agree on a path forward to change or extend the once-secret program ahead of its expiration at the end of the month. (AP Photo/Patrick Semansky, File)
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