Clearly Obama senior was a cad and bigamist as well as a Marxist. SAD wasn’t exactly mother of the year either and he was raised far more by his grandparents than birth mother. The key point however is that Barry Sotero’s father was NOT a US citizen...even by Barry’s own admission. Therefore Barry Sotero is NOT a natural born US citizen and is constitutionally ineligible to be POTUS.
Technically, Obama was illegitimate. This raises the question of whether the illegitimate child naturally follows the citizenship of the mother or the father ... if in the former case, it would make Obama a natural born bastard.