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The National Archives and Records Administration (NARA), which implements the executive branch-wide CUI Program and oversees federal agency actions to comply with Executive Order 13556. NARA has delegated this authority to the Director of the Information Security Oversight Office (ISOO).
NIST SP 800-171 Rev. 2 from 32 C.F.R., 2002
NIST SP 800-171 Rev. 1 [Superseded] from Title 32 CFR, Part 2002