WTF? I've never heard that both parents had to be US citizens when the kid is born in a forum country. What about children of US service members when the other parent is a native to whatever country the service member is in?
Sec. 301. [8 U.S.C. 1401] Nationals and Citizens of The United States At Birth
The following shall be nationals and citizens of the United States at birth:
(c) a person born outside of the United States and its outlying possessions of parents both of whom
are citizens of the United States and one of whom has had a residence in the United States or one
of its outlying possessions, prior to the birth of such person;
(g) a person born outside the geographical limits of the United States and its outlying possessions of
parents one of whom is an alien, and the other a citizen of the United States who, prior to the birth of
such person, was physically present in the United States or its outlying possessions for a period or
periods totaling not less than five years, at least two of which were after attaining the age of fourteen
years: Provided, That any periods of honorable service in the Armed Forces of the United States, or
periods of employment with the United States Government or with an international organization as
that term is defined in section 1 of the International Organizations Immunities Act (59 Stat. 669; 22
U.S.C. 288) by such citizen parent, or any periods during which such citizen parent is physically
present abroad as the dependent unmarried son or daughter and a member of the household of a
person (A) honorably serving with the Armed Forces of the United States, or (B) employed by the
United States Government or an international organization as defined in section 1 of the
International Organizations Immunities Act, may be included in order to satisfy the
physical-presence requirement of this paragraph. This proviso shall be applicable to persons born
on or after December 24, 1952, to the same extent as if it had become effective in its present form
on that date;
Sec. 309. [8 U.S.C. 1409] – Children Born Out of Wedlock
(a) The provisions of paragraphs (c), (d), (e), and (g) of section 301, and of paragraph (2) of section
308, shall apply as of the date of birth to a person born out of wedlock if (1) a blood relationship between the person and the father is established
by clear and convincing evidence,(2) the father had the nationality of the United States at the time of the person's birth,
(3) the father (unless deceased) has agreed in writing to provide financial support for the person until
the person reaches the age of 18 years, and
(4) while the person is under the age of 18 years-
(A) the person is legitimated under the law of the person's residence or domicile,
(B) the father acknowledges paternity of the person in writing under oath, or
(C) the paternity of the person is established by adjudication of a competent court.
(b) Except as otherwise provided in section 405, the provisions of section 301(g) shall apply to a
child born out of wedlock on or after January 13, 1941, and before December 24, 1952, as of the
date of birth, if the paternity of such child is established at any time while such child is under the age
of twenty-one years by legitimation.
(c) Notwithstanding the provision of subsection (a) of this section, a person born, after December
23, 1952, outside the United States and out of wedlock shall be held to have acquired at birth the
nationality status of his mother, if the mother had the nationality of the United States at the time of
such person's birth, and if the mother had previously been physically present in the United States or
one of its outlying possessions for a continuous period of one year.