Final answer:
Regulation 12 CFR 9 is a part of U.S. Federal Law and falls under the Code of Federal Regulations (CFR). It deals with regulations pertaining to national banks.
Step-by-step explanation:
The Regulation 12 CFR 9 is issued pursuant to 12 USC 92(a). It falls under the category of U.S. Federal Law. This regulation is a part of the Code of Federal Regulations (CFR), which is a collection of rules and regulations issued by various federal agencies to implement statutes passed by Congress. CFR 12 CFR 9 specifically deals with regulations pertaining to national banks.