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In U.S. federal criminal law, there is no single unified "police prosecuting authority." Instead, prosecutorial power is vested in the Department of Justice and its U.S. Attorneys, while investigative functions are performed by separate federal law enforcement agencies.
Definition
The United States federal system does not have a single consolidated authority that combines police investigation and prosecution functions under one entity. Instead, the American system maintains a separation between investigative agencies and prosecutorial bodies. The closest equivalent to a prosecuting authority in federal criminal matters is the U.S. Department of Justice (DOJ), which exercises prosecutorial discretion through its U.S. Attorneys in each federal judicial district and through specialized divisions such as the Criminal Division.
U.S. Attorneys, appointed for each of the 94 federal judicial districts, serve as the primary federal prosecutors responsible for conducting criminal prosecutions on behalf of the United States government within their respective districts. Their authority is established under 28 U.S.C. § 547, which mandates that they prosecute for all offenses against the United States. The overarching organizational structure is governed by 28 U.S.C. § 516, which vests the conduct of litigation and enforcement of federal law in the Department of Justice, unless Congress has specifically authorized another agency to handle particular matters.
Federal law enforcement agencies such as the Federal Bureau of Investigation (FBI), Drug Enforcement Administration (DEA), and Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) conduct investigations but lack independent prosecutorial authority. These agencies work in coordination with federal prosecutors, who make charging decisions and present cases in federal court. This separation ensures a system of checks and balances where investigative findings are reviewed by legal professionals before criminal charges are filed.
In true crime contexts, the term "prosecuting authority" may be used colloquially to refer to whichever government entity is pursuing criminal charges against a suspect. However, in precise legal terms within the U.S. federal system, this authority rests exclusively with DOJ attorneys. Federal criminal prosecution can only proceed when conduct violates a specific federal criminal statute, and cases must be brought in the appropriate federal district court by authorized DOJ personnel.
