I would like to add that no one has considered the changed definitions of who constitutes a citizen when born of mixed citizenship - IE his father was NOT a citizen.
The 1952 INA clearly states that those born to mixed citizenship one parent MUST BE a U.S. citizen for at least 5 years AFTER the age of 16 (meaning Mommie had to be 21 when she had baby) for the child to be a U.S. citizen.
The Act was ameneded in 1986 but most people interpret that change as reflective of those born AFTER 1986.
Accordingly - Obama cannot be President based on the Immigration and Nationality Act of 1952.
But it does not...say...that. Here is a Link to an INS website on the Immigration and Nationality act of 1952. Clink on the link at the bottom and that takes you to the act itself. Look at Title III, Chapter 1, Section 301, Paragraph G and it says that "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 five years, at least two of which were after attaining the age of fourteen years.." is a natural born U.S. citizen. This is the 1952 act as passed. If it was changed to 5 years after the age of 16 then when was this change passed into law?