That is the opposite of what everyone's been arguing in CERTIFIGATE land. Some argue he is, some he isn't, but it's been posted (and linked to source material) over and over that one US citizen parent can definitely be enough to make the child a citizen at birth.
The flip side is also true.
One foreign national parent can make the baby a foreign national.
The devil is in the details.
Let’s keep him in the details and out of the White House...
I argue for myself and you for yourself. Neither of us can presume to speak for everyone.
The most significant issue is whether Obama is "natural born" -- that is a different thing from "citizenship".
All "natural born" are citizens, but not all citizens are natural born. And by the applicable US Code at Obama's birth, he would not be citizen just because even his mother was a citizen, he would have to have been born in the US. That US Code puts stricter requirements on age of the mother and how long she has been in the US.
Interesting that Obama's own statement on the FightTheSmears website claims he a *citizen* under the 14th Amendment! Yet the 14th Amendment has nothing to do with anything in regard to Obama's situation.