[aruanan]

Yes, but a minor CANNOT revoke his own citizenship.

Three things. 1. He didn't have to revoke it. If he was allowed to be adopted by an Indonesian citizen by his custodial parent and Indonesian law did not accept dual citizenship, he automatically lost it when he became that man's adopted son. 2. If his custodial parent moved to Indonesia and married an Indonesian citizen and by this became an Indonesian citizen, then the citizenship of her minor child follows her change in citizenship. 3. Even if Barry tried to regain his U.S. citizenship, it would only be as a naturalized citizen (assuming he had not really been born in Kenya).

[The_Reader_David]

No, the fact that another country’s laws regard a person as having given up U.S. citizenship has no weight whatsoever under U.S. law.

As a reductio ad absurdum of position that it does, imagine that a revolutionary government took over a country and decreed that all persons inside the country when the new government was instituted were citizens, and that it did not recognize dual citizenship. That action would not strip U.S. citizens of their U.S. citizenship under U.S. law. U.S. citizens escaping back to the U.S. would not need to be naturalized.