18 U.S.C. § 1204: International parental kidnapping

Whoever removes a child from the United States, or attempts to do so, or retains a child (who has been in the United States) outside the United States with intent to obstruct the lawful exercise of parental rights shall be fined under this title or imprisoned not more than 3 years, or both. the term “child” means a person who has not attained the age of 16 years; and whether joint or sole (and includes visiting rights); and whether arising by operation of law, court order, or legally binding agreement of the parties. the defendant acted within the provisions of a valid court order granting the defendant legal custody or visitation rights and that order was obtained pursuant to the Uniform Child Custody Jurisdiction Act or the Uniform Child Custody Jurisdiction and Enforcement Act and was in effect at the time of the offense; the defendant was fleeing an incidence or pattern of domestic violence; or the defendant had physical custody of the child pursuant to a court order granting legal custody or visitation rights and failed to return the child as a result of circumstances beyond the defendant’s control, and the defendant notified or made reasonable attempts to notify the other parent or lawful custodian of the child of such circumstances within 24 hours after the visitation period had expired and returned the child as soon as possible. This section does not detract from The Hague Convention on the Civil Aspects of International Parental Child Abduction, done at The Hague on October 25, 1980 .