Final answer:
A US citizen parent can file a request for the return of their abducted child under the Hague Convention, which provides a legal framework to seek the return of abducted children to their country of habitual residence.
Step-by-step explanation:
If a child of a US citizen is abducted and taken to another country, the parent has the option to file a request for the return of the child under the Hague Convention. Specifically, the Hague Convention on the Civil Aspects of International Child Abduction provides a legal framework for seeking the return of abducted children to their country of habitual residence. A parent can file a petition with the central authority in their country, which will then work with the central authority of the country where the child has been taken to facilitate the child's return.
The Hague Convention aims to protect children from international abduction by a parent or guardian. The International Court of Justice (ICJ) handles cases involving disputes between states, not cases involving private citizens or family matters such as child abduction. Interpol may assist in the location of abducted children but does not have the authority to enforce their return. The INS (Immigration and Naturalization Service), which has been replaced by the US Citizenship and Immigration Services (USCIS), does not have jurisdiction over international child abduction cases.