" determined, as long as proof of non-citizenship is not provided by age 21; anyone born outside the U.S., if one parent is an alien and as long as the other parent is a citizen of the U.S. who lived in the U.S. for at least five years (with military and diplomatic service included in this time); a final, historical condition: a person born before 24 May 1934 of an alien father and a U.S. citizen m" . . . .