Banks are subject to regulation by 3 separate Federal agencies and/or state bank regulators.
Federal Agencies:
The Comptroller of the Currency charters "national banks"
The Federal Reserve Board, and
The Federal Deposit Insurance Corporation
State Regulators:
In each state there is a department of State Government – frequently called the Banking Commission or Department of Banking and Finance -- managed by an official called the Commissioner or Director or Superintendent of Banks that regulates "state chartered" banks.