Which regulatory body primarily oversees compliance for national banks?

The Office of the Comptroller of the Currency (OCC) is the regulatory body primarily responsible for overseeing compliance for national banks. The OCC's role includes ensuring that these banks operate in a safe and sound manner, adhere to applicable banking laws and regulations, and maintain consumer protection standards. This federal agency directly supervises national banks and federal savings associations, which involves enforcement of compliance requirements specific to these institutions.

The OCC’s responsibilities encompass examination and supervision of banking practices, the enforcement of financial laws, and ensuring overall financial stability. This makes it the key authority among the choices provided when it comes to oversight of national banks. In contrast, other agencies like the FDIC focus on deposit insurance and risk management, the Federal Reserve System regulates monetary policy and oversees bank holding companies, and the CFPB primarily engages with consumer financial protection at a broader level without direct oversight of national banks. Thus, while each agency plays a significant role in the financial system, the OCC is the designated authority on compliance for national banks specifically.