From the “International Business Times”
Report: NSA’s PRISM Surveillance Program Was Subject To FBI Oversight
From the article: January 2015
FBI officials have been reviewing National Security Agency surveillance to ensure that messages collected as part of the PRISM email monitoring program did not belong to American citizens, according to a declassified report obtained by the New York Times. While exactly how the FBI has conducted this oversight remains unclear, the heavily redacted document appears to show that NSA surveillance is at least subject to review from outside the agency.