Congress authorized preventive detention in the Bail Reform Act of 1984 .
The Court upheld the Bail Reform Act in United States v. Salerno , 481 U.S. 739 ( 1987 ) .
Congress authorized preventive detention in the Bail Reform Act of 1984 , and the Court upheld the Act in United States v. Salerno , 481 U.S. 739 ( 1987 ) .