 :First, he was born in South Vietnam. That country was conquered and assimilated in 1975, after he emigrated to the US. He NEVER lived in the Vietnam the current flag represents. No reliable sources say he is a citizen of either Vietnam, but several say he's American. This is a no-brainer, but if you honestly can't see that, I have no idea how to make it any simpler. Whether you actually understand you are wrong is irrelevant to the fact that consensus and reliable sources disagree with you.   