As New York Judge Sol Wachtler said in 1985, “If a district attorney wanted, a grand jury would indict a ham sandwich.”
Grand juries are the prosecutor’s babies. They decide who gets picked, what evidence gets presented, and what gets left out. There’s no judge, no defense attorney, and generally a defendant only testifies in rare circumstances — his story is so air tight that there’s no down side in putting him in. There’s no necessity for unanimity among the 23 or so jurors, and the standard of proof is so low — that probable cause exists to believe a crime has been committed — anyone, for the merest hint of an offense, can get indicted.
Quit pretending is’t a monumental accomplishment.