How did his adoption make him an exclusively Indonesian citizen? Are you suggesting that a parent can renounce US citizenship on behalf of a US Citizen child? Please show me the statute that allows a parent to do such a thing.
His US citizenship status is the question. Supposedly his mother could have him renaturalized after their return from Jakarta. But she was always a big Communist attitude on legs, and later in life she had Indonesian citizenship according to her bio (and she kept her former husband's name, spelling it Sutoro), so it's a question.
Obama supposedly didn't have a draft card until 2008, when he took one of his many "fix-it" trips to Hawaii to "visit grandmother".
If he didn't have a draft card ...... why not? If he had an Indonesian passport, that would be one explanation. The other is that he struck a Communist "resistance" pose. Maybe.
Interesting coincidence, just one more suggesting he was possibly an Indonesian citizen all through his teens. And if he didn't renaturalize immediately on his return, or his mother neglected the duty, then he would no longer have been an NBC. Or so I read.
You might want to ask Elian Gonzales that question.