12 CFR 209.1 - Authority, purpose, and scope.
(b) Purpose. The purpose of this part is to implement the provisions of the Federal Reserve Act relating to the issuance and cancellation of Federal Reserve Bank stock upon becoming or ceasing to be a member bank, or upon changes in the capital and surplus of a member bank, of the Federal Reserve System.
(c) Scope. This part applies to member banks of the Federal Reserve System, to national banks in process of organization, and to state banks applying for membership. National banks and locally-incorporated banks located in United States dependencies and possessions are eligible (with the consent of the Board) but not required to apply for membership under section 19(h) of the Federal Reserve Act, 12 U.S.C. 466. 1
1 If such a bank desires to become a member bank under the provisions of § 19(h) of the Federal Reserve Act, it should communicate with the Federal Reserve Bank with which it desires to do business.