 Several historic legal developments came out of the select committee 's investigation , including a U.S. Supreme Court decision and landmark labor legislation . The right of union officials to exercise their Fifth Amendment rights was upheld and a significant refinement of constitutional law made when the U.S. Supreme Court reaffirmed the right of union officials to not divulge the location of union records in Curcio v. United States , 354 U.S. 118 ( 1957 ) . 
