28 U.S.C. § 535 — Investigation of crimes involving Government officers and employees; limitations

(a) The Attorney General and the FBI may investigate any violation of federal criminal law involving government officers and employees (1) no matter what any other law says, and (2) without limiting whatever authority is already given to them, or to a department^* or agency^*, to investigate a matter.

(b) Any information, allegation, matter, or complaint that someone in an executive branch department or agency witnesses, discovers, or receives about a federal crime involving government officers or employees must be reported to the Attorney General quickly — by the department or agency head, or by the person who witnessed, discovered, or received it — unless (1) another law specifically assigns the investigation to someone else, or (2) the Attorney General directs otherwise for a particular kind of information, allegation, or complaint.

(c) This section does not limit (1) the military departments' authority to investigate people or offenses the armed forces have jurisdiction over under the Uniform Code of Military Justice (chapter 47 of title 10), or (2) the Postmaster General's primary authority to investigate postal offenses.