From Peter Svab at Epoch Times:
“National Security Agency data collection under Section 702 of the Foreign Intelligence Surveillance Act (FISA) is prohibited from targeting Americans. If it picks up information on Americans, the agency is supposed to mask their identities with generic identifiers such as “U.S. person 1.” Many senior government officials have the authority to request such identities unmasked, such as when it’s necessary to understand the intelligence.
The DNI releases annual reports that include overall statistics on how many personal identities have been unmasked each year.
The reports normally cover a calendar year, but for 2016, the DNI chose to report it from September 2015 to August 2016. The data for September to December of 2016 is missing.” Read the whole story here.