For the last few years, WorldNetDaily has tried to keep a thin facade of neutrality on the birther issue. But today, WND drops all pretense of neutrality by announcing the release of an "eligibility primer."
However, one graph in this primer tells you all you need to know.
"Assuming Obama's parents were Barack Obama Sr., a British subject of Kenyan origin, and Stanley Ann Dunham, an eighteen-year-old American woman, neither of his parents were qualified to transmit U.S. citizenship to him. Barack Obama Sr.'s foreign allegiance disqualified Dunham's mother from conferring U.S. citizenship under the law prevailing at the time. The law required any U.S. citizen having a child with a non-citizen to have been physically present in the United States for at least five years after the age of sixteen to automatically transmit American citizenship. Because neither parent could confer American citizenship to their son, Obama can only be a U.S. citizen if he were actually born in the United States."
The argument that Obama is disqualified from the presidency on the grounds of Ann Dunham not having been in this country long enough has been debunked several times over.
Apparently Farah is hanging his hat on this provision of citizenship law:
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) of the INA provided the U.S. citizen parent was physically present in the United States or one of its outlying possessions 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, is required for physical presence in the United States or one of its outlying possessions to transmit U.S. citizenship to the child.) The U.S. citizen parent must be genetically related to the child to transmit U.S. citizenship.
No matter what birther theory you believe, Ann Dunham was "physically present in the United States" from 1956 (when she was living in Mercer Island) until Obama's birth in 1961. By my count, that's six years' physical presence. And even without that to consider, for Ann to have been able to be in Kenya for Obama to have been born there, she would have had to have flown during summer break at the University of Hawaii--well into her third trimester. Does anyone seriously believe an airline would allow a woman showing that much to get on a plane? Apparently Farah does.
Update: Couple of commenters have pointed out two other reasons why it's simply not possible for Ann to have given birth to Obama in Kenya. She'd have had to get a yellow fever vaccination, which is not given to pregnant women. Additionally, she'd have had to get there in as many as five flights, most of them over water. And that's assuming an airline would have had the balls to even let her on a plane.