[Gluteus Maximus]

I was unaware that there was an age requirement. Could you please cite me to some source on that issue?

[Utilizer]

I believe that technically, if you are younger than eighteen years of age you are not legally an adult. If his mother was not an adult, then she could not legally transfer anything to him as she would be technically a minor, not allowed to perform any legal acts on her own. That includes being bound by any contracts or legal agreements, and having no power to sign any legal documents on her own recognizance.

[arthurus]

”When one parent was a U.S. citizen and the other a foreign national, the U.S. citizen parent must have resided in the U.S. for a total of 10 years prior to birth of the child with FIVE of the years after the age of 14.” Stanley Ann Dunham did not meet requisite status according to blog discovery. One commenter said, “She was not old enough to register Obama’s birth in Hawaii or anywhere else in the U.S. as a Natural Born Citizen as she did not meet the residency requirements! Backing this statement up, another commenter reiterates:” The law specifically outlines the requirements for a CITIZEN mother to confer citizenship to her baby.
Read more at http://www.westernjournalism.com/obama-not-a-citizen-thanks-to-his-own-mother/#bUPjfZp4iDxUAoE5.99

[TheCipher]

Here is the law at the time of his birth.

Birth Abroad to One Citizen and One Alien Parent in Wedlock: A child born abroad to one U.S. citizen parent and one alien parent acquires U.S. citizenship at birth under Section 301(g) INA provided the citizen parent was physically present in the U.S. for the time period required by the law applicable at the time of the child's birth. (For birth on or after November 14, 1986, a period of five years physical presence, two after the age of fourteen is required. For birth between December 24, 1952 and November 13, 1986, a period of ten years, five after the age of fourteen are required for physical presence in the U.S. to transmit U.S. citizenship to the child.

She was 18 when he was born, thus did not meet the 5 year after age 14 requirement.

[ConjunctionJunction]

Here's another source:

http://www.greencardlawyers.com/citizenship/citizenbybirth.html