The controversy isn't about his birthplace - it is about his status as a “natural born citizen”.
This official certificate of live birth clearly states that his father is a foreign national. This means Obama is ineligible to be president because both of his parents weren't citizens of the United States at the time of his birth. As a minor, his mother couldn't pass on her citizenship.
Wonder who will follow this in the media?
(page 246)
And the constitution itself contains a direct recognition of the subsisting common law principle, in the section which defines the qualification of the President. “No person except a natural bom citizen, or a citizen of the United States at the time of the adoption of this constitution, shall be eligible to the office of President,” &c. The only standard which then existed, of a natural born citizen, was the rule of the common law, and no different standard has been adopted since. Suppose a person should be elected President who was native born, but of alien parents, could there be any reasonable doubt that he was eligible under the constitution? I think not.
(pg 250)
6. Upon principle, therefore, I can entertain no doubt, but that by the law of the United States, every person born within the dominions and allegiance of the United States States, whatever were the situation of his parents, is a natural born citizen.
http://tesibria.typepad.com/whats_your_evidence/Lynch_v_Clarke_1844_ocr.pdf