He obviously has a caucasian mother. The lady claiming to be his mother is a citizen. A DNA test would confirm that.
One only needs one native born parent to be a US citizen....even if he does have a phony birth certificate.
I don't know if that is true. One has to be born under the jurisdiction of the United States of America in order to be a natural born citizen.
Montana v. Kennedy, 366 U.S. 308 (1961): A person born in 1906, whose mother was a native-born citizen of the United States and whose father was a foreign citizen, who was born overseas and then moved to the United States, was not a citizen of the United States by birth.