You’re saying Obama wasn’t sure if his parents were actually married? Do you have a quote from him about this?
This is something I found and have seen quoted elsewhere:
“In fact, how and when the marriage occurred remains a bit murky, a bill of particulars that I’ve never quite had the courage to explore. There’s no record of a real wedding, a cake, a ring, a giving away of the bride. No families were in attendance; it’s not even clear that people back in Kansas were fully informed. Just a small civil ceremony, a justice of the peace. The whole thing seems so fragile ...”