no evidence before the district court established that a guilty plea resulting in a predicate state conviction

US v. Rosa, No. 05-3621
A sentence to the statutory mandatory minimum, based on the court's finding that defendant is a violent felon under the Armed Career Criminal Act, is vacated under Shepard v. US, 544 U.S. 13 (2005), where no evidence before the district court established that a guilty plea resulting in a predicate state conviction necessarily admitted and supported a conviction for a crime or act of juvenile delinquency involving the use or carrying of a firearm that would be punishable by imprisonment for a term exceeding one year