Understanding the Federal Prosecutor's Role in an Eastern District Case
This page is an independent educational resource for people facing federal criminal exposure in southeastern Louisiana. It explains how the prosecuting office functions institutionally, because understanding the other side of a federal case is part of preparing a defense. It is not published by, affiliated with, or endorsed by any government agency.
What a United States Attorney's Office Is
Federal criminal prosecutions are brought by United States Attorneys' Offices, of which there are 94 nationwide, each covering a federal judicial district. They are components of the Department of Justice. Each office is led by a United States Attorney — a presidentially appointed, Senate-confirmed position — and staffed by Assistant United States Attorneys, commonly abbreviated AUSAs, who handle the day-to-day litigation.
An office is typically divided into criminal and civil divisions, with the criminal division further organized into units concentrating on particular offense categories. For a defendant, the practical significance is that the AUSA assigned to a case usually works within a specialized unit and brings a developed familiarity with that category of prosecution.
Charging Decisions
Federal prosecutors exercise substantial discretion over whether to charge, what to charge, and whom to charge. That discretion is exercised within Department of Justice policy and is not reviewable by a court in the ordinary case. Several features of it matter to the defense:
- Charge selection drives sentencing exposure. Because statutory mandatory minimums and Sentencing Guidelines calculations attach to specific offenses and specific quantities or loss amounts, the charging decision often determines the realistic sentencing range before any judge becomes involved.
- Declination is possible. An office may decline to prosecute, refer a matter to state authorities, or resolve it civilly. This is why pre-indictment engagement can matter.
- Cases arrive developed. Federal investigations typically run for months or years before charges are filed, with the office involved throughout.
Working With Investigating Agencies
Federal prosecutors do not conduct investigations themselves. They work with investigating agencies — among them the FBI, DEA, IRS Criminal Investigation, Homeland Security Investigations, and agency inspectors general — which develop the evidence. The prosecutor's role includes obtaining grand jury subpoenas, seeking search warrants, and making the ultimate charging decision.
This division of labor explains a pattern defendants often encounter: the agents who conduct interviews and execute warrants are not the people who will decide whether charges are brought, and statements made to agents reach the prosecutor as part of the investigative record.
What This Means for a Defendant
A United States Attorney's Office represents the United States. It does not represent private individuals, cannot give legal advice to a person it may prosecute, and has no obligation to explain a defendant's options to them. Anyone who becomes aware of federal investigative interest — through a target letter, a grand jury subpoena, a search warrant, or contact from federal agents — should obtain independent federal criminal defense counsel rather than attempting to resolve the matter directly.
Speaking with federal investigators without counsel carries a specific hazard: false statements to federal agents are independently chargeable under 18 U.S.C. § 1001, which means an interview can produce a charge that would not otherwise have existed.
Where the Case Goes
A federal prosecution in this region is filed in the United States District Court for the Eastern District of Louisiana and follows the sequence set out in our guide to the federal criminal case process. Background on the court itself — its jurisdiction, the parishes it covers, and how district and magistrate judges divide the work — is available in our guide to the district court.
Court filings and public records are available through the federal judiciary's PACER system at pacer.uscourts.gov, subject to the sealing limitations that apply in criminal cases.