Does the FBI investigate graft and corruption in local government and in state and local police departments?

Yes. The FBI uses applicable federal laws, including the Hobbs Act, to investigate violations by public officials in federal, state, and local governments. A public official is any person elected, appointed, employed, or otherwise having a duty to maintain honest and faithful public service. Most violations occur when the official solicits, accepts, receives, or agrees to receive something of value in return for influence in the performance of an official act. The categories of public corruption investigated by the FBI include legislative, judicial, regulatory, contractual, and law enforcement.