His mother was a US citizen at the time of his birth. Here is the statute regarding renouncing citizenship for minors...
F. RENUNCIATION FOR MINOR CHILDREN
Parents cannot renounce U.S. citizenship on behalf of their minor children. Before an oath of renunciation will be administered under Section
349(a)(5) of the INA, a person under the age of eighteen must convince a U.S. diplomatic or consular officer that he/she fully understands the nature
and consequences of the oath of renunciation, is not subject to duress or undue influence, and is voluntarily seeking to renounce his/her U.S.
citizenship.
G. IRREVOCABILITY OF RENUNCIATION
Finally, those contemplating a renunciation of U.S. citizenship should understand that the act is irrevocable, except as provided in section 351 of
the INA (8 U.S.C. 1483), and cannot be canceled or set aside absent successful administrative or judicial appeal. (Section 351(b) of the INA provides
that an applicant who renounced his or her U.S. citizenship before the age of eighteen can have that citizenship reinstated if he or she makes that
desire known to the Department of State within six months after attaining the age of eighteen. See also Title 22, Code of Federal Regulations, section
50.20).
Renunciation is the most unequivocal way in which a person can manifest an intention to relinquish U.S. citizenship. Please consider the effects of
renouncing U.S. citizenship, described above, before taking this serious and irrevocable action. If you have any further questions regarding this
matter, please contact:
Express Mail:
Director
Office of Policy Review and Inter-Agency Liaison (CA/OCS/PRI)
Overseas Citizens Services
Bureau of Consular Affairs
U.S. Department of State
4th Floor
2100 Pennsylvania Avenue, N.W.
Washington, D.C. 20037
Phone: 202-736-9110
Fax: 202-736-9111
Email:
[email protected]
Regular Mail
Director
Office of Policy Review and Inter-Agency Liaison (CA/OCS/PRI)
Overseas Citizens Services
Bureau of Consular Affairs
U.S. Department of State
SA-29, 4th Floor
Washington, D.C. 20520
Return to Citizenship and Nationality
Sorry I don't see anything of consequense here.