An alien is eligible for benefits under Public Law 97-359 as the Amerasian child or son or daughter of a United States citizen if there is reason to believe that the alien was born in Korea, Vietnam, Laos, Kampuchea, or Thailand after December 31, 1950, and before October 22, 1982, and was fathered by a United States citizen. Such an alien is eligible for classification under sections 201(b) , 203(a)(1) , or203(a)(3) of the Act as the Amerasian child or son or daughter of a United States citizen, pursuant to section 204(f) of the Act.