"Since 1959" . . . . . . . . . . . . . . . "The LIBERTAD Act : implementation and international law : hearing before the Subcommittee on Western Hemisphere and Peace Corps Affairs of the Committee on Foreign Relations, United States Senate, One Hundred Fourth Congress, second session, July 30, 1996"@en . . . . . . "The LIBERTAD Act implementation and international law : hearing before the Subcommittee on Western Hemisphere and Peace Corps Affairs of the Committee on Foreign Relations, United States Senate, One Hundred Fourth Congress, second session, July 30, 1996"@en . . . . . "United States" . . "Cuba" . . . . "1959 - 1990" . .