Banks in the USA are regulated at the federal and state levels. The Federal Reserve System and the Office of the Comptroller of the Currency are two banking regulatory authorities in the US.
The Federal Reserve regulates major banking institutions, such as foreign branches of American national and state member banks. The Federal Reserve also regulates state-chartered member banks. In addition, the Federal Reserve is the federal regulator for bank holding companies.
The Office of the Comptroller of the Currency supervises federal savings associations and national banks.
Federal Reserve System, Office of Thrift Supervision and National Credit Union Administration are the other financial industry regulators at the federal level.
In the US, each state has established its own agency to regulate and supervise banks. In California, the Department of Financial Institutions regulates state-chartered banks.