The file biography maintained by his literary agents that was confirmed to be authentic could only have come from Obama. It should have been more than enough for Obama to be compelled by congress to permit forensic analysis of his long form Hawaiian birth certificate and the rest of his life story to prove his eligibility. Unfortunately by that time, right before the 2012 election as I recall, the republican leadership had been fully co-opted into not challenging the usurper in chief. They knew the'd be taken out with him should an "inconvenient truth" be revealed.
I'm afraid given the bi-partisan rot throughout our political system, we're probably stuck with Obama. However it's still very important that this research continue for the historical record.