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A federal or state law enforcement agency may request the denial of a passport on several regulatory grounds under 22 CFR 51.70 and 51.72. The principal law enforcement reasons for passport denial are a federal warrant of arrest, a federal or state criminal court order, a condition of parole or probation forbidding departure from the United States (or the jurisdiction of the court), or a request for extradition. The HHS child support database and the Marshals Service WIN database are checked automatically for entitlement to a passport. Denial or revocation of a passport does not prevent the use of outstanding valid passports.