|Citizenship of other countries is irrelevant to US citizenship.
1) But we aren't talking US "Citizenship", now are we? Citizenship is NOT Natural Born Citizenship. There IS a difference, otherwise the same Constitutional requirement would apply to Senators today had the Framers not negotiated that out of the Constitution in summer 1787.
2) IF Obama used his Commonwealth, Kenyan or Indonesian credentials at Occidental or afterward, as it's suspected he did, YES — it will make a difference. Usage of a foreign country's passport CAN jeopardize US citizenship. Ann Dunham and Obama’s old INS records are still on request and forthcoming ...
I suspect, just like with ClimateGate, there's a bit more to the Obama story than the MSM "vetted" in the past.
I have to ask you. When was the last time this distinction was actually used in a court of law ? Has this ever been used ?
2) As a minor, he's not responsible for decisions made by his mother/guardian on his behalf.