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>Mercer
>https://www.nsa.gov/news-features/press-room/Article/1618699/nsa-stops-certain-section-702-upstream-activities/
>NSA Stops Certain Section 702 "Upstream" Activities
statement PRISM 2017 privacy surveillance FISA 702 Foreign Intelligence Surveillance Act Court Section 702 downstream stop stopping upstream CLPO civil liberties