Did some digging also:
1952 The Immigration and Nationality Act of June 27, 1952, 66 Stat. 163, 235, 8 U.S. Code Section 1401 (b). (Section 301 of the Act).
“Section 301. (a) The following shall be nationals and citizens of the United States at birth:
“(1) a person born in the United States, and subject to the jurisdiction thereof;
“(7) a person born outside the geographical limits of the United States and its outlying possessions of parents one of whom is an alien, and the other a citizen of the United States, who prior to the birth of such person, was physically present in the United States or its outlying possessions for a period or periods totaling not less than ten years, at least five of which were after attaining the age of fourteen years.
http://www.aca.ch/hisuscit.htm
.
A BRIEF HISTORY OF
U.S. CITIZENSHIP LAW
AND AMERICANS OVERSEAS
And everyone who cites that section of federal law fails to realize it doesn't apply to Obama's circumstances.
I looked the argument over, and it looks plausible, if he really was not born in Hawaii afterall. On the other hand, I think the law has been changed since then, though I don’t have the time to research whether it would have retroactive application. Doesn’t seem like it should.