; and (2) by adding at the end the following: (e) Definition For purposes of this section, the term child has the meaning given such term in section 101(c), except that such term includes the nonmarital child of a legal custodial citizen father, and the child of a United States citizen parent if the parent-child relationship satisfies the parentage laws of the child’s or parent’s residence or domicile, whether in the United States or elsewhere. (f) Clarifications Any provision of law (including section 301(b) of the Immigration and Nationality Act (as in effect before October 10, 1978), and the provisos of section 201(g) of the Nationality Act of 1940) that provide for a person’s loss of citizenship if the person failed to come to, or reside or be physically present in, the United States shall not apply in the case of a person claiming United States citizenship based on such person’s descent from an individual described in this section. Any provision of law (including sections 301 and 309 of the Immigration and Nationality Act, and the provisos of 201(g) and 205 the Nationality Act of 1940) that require the citizen parent to reside in the United States for a number of years shall be deemed satisfied by subsection (a)(3). (g) Retroactive application This section, as amended by the Equal Citizenship for Children Act of 2023 shall be applied to persons born after noon (Eastern Standard Time), January 9, 1941, as though this section, as amended, had been in effect on the date of their birth, except that the retroactive application described in this subsection shall not affect the validity of citizenship of anyone who has obtained citizenship under any other provision of law. . 3. Children born and residing outside the united states Section 322 of the Immigration and Nationality Act ( 8 U.S.C. 1433 ) is amended by adding at the end the following: (e) Definition For purposes of this section, the term child has the meaning given such term in section 320. .