I am not a lawyer, but https://www.nsa.gov/about/faqs/oversight.shtml https://www.nsa.gov/about/faqs/oversight.shtml mentions Executive Order 12333 and other le

I am not a lawyer, but https://www.nsa.gov/about/faqs/oversight.shtml https://www.nsa.gov/about/faqs/oversight.shtml mentions Executive Order 12333 and other legal mechanisms.