Correct. I did, of course, google it. http://en.wikipedia.org/wiki/Natural_born_citizen...
Numerous interpretations. Take your pick, op2mistic1, but try not to choose only the one that suits your prejudices. President Obama is a citizen and is eligible to be President.

His mother is a US citizen and he was born in Hawai'i. His father's status is irrelevant.

"Perhaps I’m overreacting to this."
That's putting it mildly. Surely you can find something more worthy to criticize the president for.