They got divorced, and those records have been revealed. But there was not a copy of the marriage certificate in the paperwork. No copy of that, or any marriage announcement has been found. That is a someone unusual in a time and place when all the births were reported in not one, but two newspapers. My hometown, now approaching 200,000 souls, has a regular daily newspaper that continues to report both marriages and births, including in the online version. But that is not true in most places that large.
Besides, BHO Sr was already married to a Kenyan woman. After abandoning BO and his mother (she was likely glad to see him go) Sr. married another Caucasian woman from Boston, but he did it in Kenya where multiple wives are legal. IIRC, he later married another Kenyan woman. What all these women saw in a drunken carouser, I haven't a clue.
That would be Jael, the mother of George, and who lives in the US. George is the one who's dirt poor back in Kenya. Jael has been living in the US for years. Is she here legally or illegally like Aunt Zeituni and Uncle Omar?