The 1948 BNA requires a legitimate marriage to pass citizenship. The INS booted BHO Sr. from the US because they believed that due to bigamy, he had fathered a out-of-wedlock child. The identity of the father being known doesn't pass citizenship, only a marriage recognized by the UK and Kenya. The Kenya marriage act regards tribal marriages as legal and subsequent marriages bigamous.
The US statutes, ironically, would NOT permit SADO to pass he US citizenship to Barry if she were legally married to BHO Sr. and gave birth outside the US due to failing the five-year after age 14 residency requirement.
If SADO were single she WOULD pass her US citizenship to Barry if he were born in Kenya because regardless of whether the identity of the sperm donor is known or not, she only needs one year of residence with no age limit prior to the birth.
He is a Fraud. FACT.
I have never believed he was born in Kenya. A much more likely place would be Canada.
I also do not believe that BHO, Sr. is his biological father.
He is Barry the Bastard. (all senses of the word)