We have no actual proof that he was ever an American citizen. If in fact the Nordyke twins' birth announcement was removed to insert the Obama data, that data is suspect and he could have been born anywahere since Hawaii would issue an Hawaiian birth certification for people not born in Hawaii and not having Hawaiian parents. [See the story of Sun Yat Sen]
I’ve heard that Obama attended Occidental College as Barry Soetoro which leads me to believe that it was as a foreign student. Also, experts say that Obama’s advertised Selective Service registration form is also a forgery. Thus, we might conclude that he may never have even been an American citizen (much less a natural born citizen).
You wrote-
“.... It would be instructive though if after reaching the age of eighteen he used Indonesian citizenship to apply for college, loans, scholarships, or an Indonesian passport update. Such action would rpesume favoring Indonesian citizenship and dropping American citizenship IF he ever had American citizenship.
We have no actual proof that he was ever an American citizen.”