§ 1431.
Children born outside the United States and lawfully admitted for permanent residence; conditions under which citizenship automatically acquired
(a)
In general
A child born outside of the United States automatically becomes a citizen of the United States when all of the following conditions have been fulfilled:
(1)
At least one parent of the child is a citizen of the United States, whether by birth or naturalization.
(2)
The child is under the age of eighteen years.
(3)
The child is residing in the United States in the legal and physical custody of the citizen parent pursuant to a lawful admission for permanent residence.
(c)
Children of military and Federal Government personnel residing abroad
Subsection (a)(3) is deemed satisfied in the case of a child who is lawfully admitted for permanent residence in the United States if—
(1)
the child is residing in the legal and physical custody of a citizen parent who is—
(A)
stationed and residing abroad as an employee of the Government of the United States; or
(B)
residing abroad in marital union with an employee of the Government of the United States who is stationed abroad; or
(2)
the child is—
(A)
residing in the legal and physical custody of a citizen parent who is—
(i)
stationed and residing abroad as a member of the Armed Forces of the United States; or
(ii)
authorized to accompany and reside abroad with a member of the Armed Forces of the United States pursuant to the member’s official orders, and is so accompanying and residing abroad with the member in marital union; and
(B)
authorized to accompany such member and reside abroad with the member pursuant to the member’s official orders, and is so accompanying and residing with the member.
([June 27, 1952, ch. 477], title III, ch. 2, § 320, [66 Stat. 245]; [Pub. L. 95–417, § 4], Oct. 5, 1978, [92 Stat. 917]; [Pub. L. 97–116, § 18(m)], Dec. 29, 1981, [95 Stat. 1620]; [Pub. L. 99–653, § 14], Nov. 14, 1986, [100 Stat. 3657]; [Pub. L. 100–525], §§ 8(l), 9(w), Oct. 24, 1988, [102 Stat. 2618], 2621; [Pub. L. 106–395, title I, § 101(a)], Oct. 30, 2000, [114 Stat. 1631]; [Pub. L. 113–74, § 2], Jan. 16, 2014, [127 Stat. 1212]; [Pub. L. 116–133, § 2(a)], Mar. 26, 2020, [134 Stat. 274].)