text: Amendments to the Cable Act and nationality laws continued until 1940, when married women were granted their own nationality without restriction. That year, Congress amended the Nationality Act, distinguishing for the first time different rules for derivative nationality for legitimate and illegitimate children. Under the provisions, children born out of wedlock passed from mother to child automatically, but required legitimization of paternity prior to a child reaching the age of majority for derivative nationality from the father. The 1940 Act also allowed all women who had previously lost their citizenship because of marriage to repatriate without regard to their marital status, by swearing the oath of allegiance, as opposed to the previous policy of repatriation by naturalization. Racial exclusions for derivative naturalization of husbands of U.S.-citizen wives remained in place until passage of the McCarran-Walter Act in 1952. Though it ended utilizing race as a criterion for admission to the country of nationalization, continued use of quotas to restrict immigration from Asian countries did not end racial exclusion. Until immigration laws were reformed by the Immigration and Nationality Act of 1965, the restrictive quota system remained in place.
  Refinements and interpretations 1966 to 2001
  Until 1972, the Nationality Laws of the United States required that children born abroad to U.S. nationals complete a five-year residency by establishing a continuous domicile in the territory prior to their twenty-third birthday. Failure to establish a residence nullified U.S. nationality and citizenship. In 1982, Congress enacted provisions for children born between 1950 and 1982 to facilitate immigration for children of U.S. national fathers. Intended to assist children born in areas where the U.S. had been militarily active, it applied to children born in Kampuchea, Korea, Laos, Thailand and Vietnam. The special provisions did not give children nationality, but loosened the requirements for legitimization and financial support for children born abroad, removed scrutiny of the father's marital status, requiring only that the Attorney General establish that a presumed father was a citizen and that a sponsor agreed to take legal custody and support a child under the age of eighteen. In 1987, the Amerasian Homecoming Act facilitated resettlement of immigrant Vietnamese mothers and their children born between 1962 and 1972 to U.S. military personnel.