The OCC was established in 1863 as a bureau of the U.S. Department of the Treasury and is headed by the Comptroller, who is appointed by the President.
The main purpose of the OCC is to provide regulations and supervision of the charters to all national banks. Therefore the website allows the researcher not only to access pending and recently enacted legislation, but to explore law and licensing documents providing guidance, establishing precedents and court documents of interest. In addition one may check if any national bank or foreign branch has ever been under scrutiny by the OCC.
