NICE STATEMENT!
Maybe the legallity of his parents marriage could possibly come into play if he was born in the U S. However, if he was born in Kenya, as I believe he was, bigamy was legal there so the Kenyan birth makes him a citizen. The fact his mother was American does not come into play because she was too young to convey auto American citizenship on him. His parents would be considered legally married when they were in Kenya but perhaps not legally married when they were in the U S. That aspect does pose an interesting angle.
It would appear that ...born in Hawaii of a bigamous, therefore not legal, marriage, maybe he was not a dual citizen at birth. Born in Kenya of a bigamous but legal marriage, not an American citizen.
That’s before you throw in the Indonesian connection.