U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 12Chapter IIPart 251 - PART 251—CONCENTRATION LIMIT (REGULATION XX)
§ 251.1 - Authority, purpose, and other authorities.
§ 251.2 - Definitions.
§ 251.3 - Concentration limit.
§ 251.4 - Exceptions to the concentration limit.
§ 251.5 - No evasion.
§ 251.6 - Reporting requirements.
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