8 CFR 287.12: Scope.

With regard to this part, these regulations provide internal guidance on specific areas of law enforcement authority. These regulations do not, are not intended to, and shall not be construed to exclude, supplant, or limit otherwise lawful activities of the Department or the Secretary. These regulations do not, are not intended to, shall not be construed to, and may not be relied upon to create any rights, substantive or procedural, enforceable at law by any party in any matter, civil or criminal. The Secretary shall have exclusive authority to enforce these regulations through such administrative and other means as he may deem appropriate.