U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 5Chapter IIIPart 1312Subpart A - Subpart A—Classification and Declassification of National Security Information
§ 1312.1 - Purpose and authority.
§ 1312.2 - Responsibilities.
§ 1312.3 - Classification requirements.
§ 1312.4 - Classified designations.
§ 1312.5 - Authority to classify.
§ 1312.6 - Duration of classification.
§ 1312.7 - Derivative classification.
§ 1312.8 - Standard identification and markings.
§ 1312.9 - Downgrading and declassification.
§ 1312.10 - Systematic review guidelines.
§ 1312.11 - Challenges to classifications.
§ 1312.12 - Security Program Review Committee.
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