Aaaaaha, I Now I Understand

Obama's nanny was an openly gay man who, in keeping with Indonesia’s relaxed attitudes toward homosexuality, carried on an affair with a local butcher, longtime residents said. The nanny later joined a group of transvestites called Fantastic Dolls, who, like the many transvestites who remain fixtures of Jakarta’s streetscape, entertained people by dancing and playing volleyball.

Well shit, that explains everything. He married his nanny.