Federal Criminal Defense: An Overview of Statutes and Process

Federal criminal defense is the body of law and procedure that governs prosecutions brought by the United States in federal district court. A federal case moves through a fixed sequence: investigation, indictment, pretrial motions, trial, sentencing, and appeal. The Federal Rules of Criminal Procedure set the procedural framework, while the charge itself comes from a federal statute. Three statutes frame much of the field: 18 U.S.C. § 371, which reaches agreements to commit federal offenses; 21 U.S.C. § 841, the principal federal drug trafficking statute; and 18 U.S.C. § 924(c), which adds mandatory penalties when a firearm is carried or used during a crime of violence or drug trafficking crime.

How a federal case is charged

Most federal felonies are charged by grand jury indictment. The grand jury hears the prosecutor's evidence and decides whether probable cause supports each charge. The defendant is then arraigned, enters a plea, and the case proceeds under the Federal Rules of Criminal Procedure.

Drug cases are built primarily on 21 U.S.C. § 841, which makes it unlawful to manufacture, distribute, or dispense a controlled substance, or to possess it with intent to do so. Firearms charges frequently accompany drug and violent crime cases through 18 U.S.C. § 924(c), which stacks additional mandatory terms on top of the underlying sentence.

Conspiracy charges

Many federal prosecutions are conspiracy cases. Under 18 U.S.C. § 371, an agreement between two or more people to commit a federal offense — or to defraud the United States — is itself a crime once any conspirator takes an act to carry the agreement out. The conspiracy charge allows the government to try related conduct in a single case and to admit statements made by coconspirators during the conspiracy.

How this desk covers the field

The Corydon Law Research Desk maintains reference pages for each stage of the federal process: investigations, drug and fraud prosecutions, white-collar cases, sentencing, trial, plea negotiations, and pretrial motions. Each page links to the statute or rule it describes, quoted from the primary source.

Published by the Corydon Law Research Desk — Corydon Law Research Desk, publisher — former federal prosecutor. This page is reference information about federal law and procedure, not legal advice.

Primary sources

Sources listed above were accessed and verified on August 20, 2026. Statutes and rules are quoted from the linked primary pages as published on that date. Information on this site is general in nature and is not legal advice.

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