obama is a native born citizen assuming that he was born in Hawaii(?). If he was born in Kenya ,his mother was too young to convey citizenship and that would make him a kenyan national.Children of naturalized(full allegiance) citizens are Natural born citizens .A child born to immigrants ( persons going though the immigration process) but are not yet Naturalized are native born (Wong Kim Ark). If obama was born in Hawaii he is a native born citizen( per U.S. supreme court) and ineligible to be President.
Pretty cool for Mexico... lucky for them we don't have a provision providing for derivation of pure American citizenship at birth for our president. For pur loyalties to America. I wonder how the founders would have phrased that clause while looking to Vattel, Law of nations, for a simple definition? After Washington received the letter from John Jay?