8 CFR § 322.2 - Eligibility.
(2) The United States citizen parent has been physically present in the United States or its outlying possessions for at least 5 years, at least 2 of which were after the age of 14, or the United States citizen parent has a United States citizen parent who has been physically present in the United States or its outlying possessions for at least 5 years, at least 2 of which were after the age of 14;
(3) The child currently is under 18 years of age;
(b) Additional requirements if child is adopted. If an adopted child, all of the requirements in paragraph (a) of this section must be fulfilled and the child must satisfy the requirements applicable to adopted children under section 101(b)(1) of the Act.
(c) Exceptions for children of military personnel. Pursuant to section 322(d) of the Act, a child of a member of the Armed Forces of the United States residing abroad is exempt from the temporary physical presence, lawful admission, and maintenance of lawful status requirements under 8 CFR 322.2(a)(5), if the child:
(1) Is authorized to accompany and reside abroad with the member of the Armed Forces pursuant to the member's official orders; and
(2) Is accompanying and residing abroad with the member of the Armed Forces.