516 U.S. 29 516 U.S. 29116 S.Ct. 356133 L.Ed.2d 271 Joseph LIBRETTI, Petitioner,v.UNITED STATES. No. 94-7427. Supreme Court of the United States Argued Oct. 3, 1995. Decided Nov. 7, 1995. Syllabus * During petitioner Libretti’s trial on federal drug and related charges, he entered into a plea agreement with the Government, whereby, among other things, […]