Legal rule keeping grand jury proceedings confidential, often shielding prosecutorial misconduct
Grand jury secrecy refers to the legal requirement that proceedings before a federal grand jury remain confidential. Rule 6(e) of the Federal Rules of Criminal Procedure prohibits disclosure of "matters occurring before the grand jury" by government attorneys, court personnel, and jurors. While secrecy rules were originally designed to protect witnesses, the accused, and the integrity of investigations, they also shield prosecutorial conduct from public scrutiny.
Grand juries are often described as a check on prosecutorial power — a group of citizens who must agree that sufficient evidence exists before a person can be indicted. In practice, the prosecutor controls what evidence the grand jury sees, which witnesses testify, and how the law is presented. The famous observation that a prosecutor could "indict a ham sandwich" reflects the near-total prosecutorial control over grand jury proceedings.
The secrecy surrounding grand juries becomes particularly significant in cases involving government misconduct. When federal prosecutors investigate — or decline to investigate — cases involving intelligence agencies, law enforcement, or political figures, grand jury secrecy ensures that the public never learns what evidence was presented, what leads were pursued or ignored, and why certain decisions were made. The same secrecy designed to protect the rights of the accused also protects the government from accountability.
