; or (ii) the protection of Federal, State, local, or foreign government officials against threats to personal safety; and (2) includes a law enforcement officer employed by the Amtrak Police Department or Federal Reserve. (b) Federal law enforcement agency The term Federal law enforcement agency means any agency of the United States authorized to engage in or supervise the prevention, detection, investigation, or prosecution of any violation of Federal criminal law. (c) State The term State has the meaning given such term in section 901 of the Omnibus Crime Control and Safe Streets Act of 1968 ( 34 U.S.C. 10251 ). (d) Unit of local government The term unit of local government has the meaning given such term in section 901 of the Omnibus Crime Control and Safe Streets Act of 1968 ( 34 U.S.C. 10251 ).