Apparently you aren’t really listening. If you want to be a citizen of Indonesia you HAVE TO GIVE UP WHAT EVER CITIZENSHIP YOU CURRENTLY HOLD. You RENOUNCE IT. Thats the Indonesian law.
So it would be a matter of record at the US Consulate or Embassy that Obama's mother renounced his citizenship. Then there would be a document from the US Consulate or Embassy to show the Indonesian authorities - unless such a document was forged. Of course, even a forged document should still be on record with the Indonesians.
For world hoppers like Mrs. Obama, there must be many problems to overcome with regards to citizenship.
Interesting, but irrelevant. Unless there is evidence out there that Barrack Obama did in fact renounce his American citizenship at some point, his status as a citizen or non-citizen of Indonesia makes no difference under American law.