The press can track down an 80 year old Brazillian that had a brief romance with a young John McCain but can’t find anyone that knew Obama. Simarly, the press had no interest in Obama’s 1981 trip to Pakistan. I believe, at that time, non-Muslims and Americans were prohibited from entry. It was thought that he may have used an Indonesian passport to gain entry. You’d think that someone would have slipped up and referenced dual citizenship as one of the reasons that Obama was so worldly and smart!
The trip to Pakistan is a real avenue to look at.
There is some doubt whether O ever had Indonesian citizenship. I understand it was noted on his school app. but Indonesian law made it difficult more those not born of an Indonesian mother to claim citizenship. They did not recognize dual citizenship. The law has just recently changed, in 06 I think.