The Sixth U.S. Circuit Court of Appeals in Cincinnati has rejected a request to posthumously restore the American citizenship of a recently deceased Cleveland-area autoworker convicted of Nazi war crimes. John Demjanjuk died in Germany in March at age 91. His attorneys say the government withheld potentially helpful material. They asked the court to either restore the citizenship or to order a hearing on the case. The decision upholds a ruling last year by a Cleveland judge who refused to reopen the citizenship case.