United States v. Calandra

Court.

delivered the opinion of the

This case presents the question whether a witness summoned to appear and testify before a grand jury may refuse to answer questions on the ground that they are based on evidence obtained from an unlawful search and seizure. The issue is of considerable importance to the administration of criminal justice.

*340I

On December 11, 1970, federal agents obtained a warrant authorizing a search of respondent John Calan-dra’s place of business, the Royal Machine & Tool Co. in Cleveland, Ohio. The warrant was issued in connection with an extensive investigation of suspected…