You can find this case regarding stowaways on the link below :
(Case 3:05-cv-00579 Document 100 Filed in TXSD on 08/03/07)
Masoud Jahani Esq.
A: The subject of your question comes under derivative citizenship. You may have applied by filing an I-130 petition and you were asked for supporting documents.
The requirements for derivative citizenship are below:
A child born outside of the United States automatically becomes a U.S. citizen when all of the following conditions have been met on or after February 27, 2001:
• The child has at least one parent, including an adoptive parent who is a U.S. citizen by birth or through naturalization;
• The child is under 18 years of age;
• The child is a lawful permanent resident (LPR); and
• The child is residing in the United States in the legal and physical custody of the U.S. citizen parent.