United States v. Dionisio
Supreme Court of the United States
410 U.S. 1 (1973)
Relevant factsFree
A grand jury investigating illegal gambling subpoenaed Dionisio (defendant) and several others to provide voice samples for comparison against recordings gathered in the investigation. Dionisio refused, arguing the demand violated his Fourth and Fifth Amendment rights; the district court ordered compliance and held him in contempt when he still refused. The court of appeals held the subpoena was an unreasonable Fourth Amendment seizure and reversed. The Supreme Court granted certiorari.
IssueFree
Whether compelled production of a voice sample violates the constitutional protections of the Fourth Amendment or the Fifth Amendment.