; (B) cost data are not readily available because illegal aliens are not required to reveal their eligibility to receive certain benefits, and officials are often prohibited from inquiring about the status of illegal aliens; (C) the total costs of providing benefits to illegal aliens is unknown due to Federal and State cost data limitations; (D) the estimated cost of providing AFDC benefits to children of illegal aliens was $479,000,000 for 1992; (E) of the 5 States that account for about 80 percent of the illegal immigrant population, California provided the most benefits totaling $2,900,000,000; (F) the cost of providing benefits to illegal aliens is expected to increase some program costs; and (G) the complete fiscal impact of providing benefits to illegal aliens cannot be determined, since government revenues attributable to illegal aliens are unknown. 4. Clarification of birthright citizenship Section 101 of the Immigration and Nationality Act ( 8 U.S.C. 1101 ) is amended by adding at the end the following: (j) For purposes of section 301(a), the term subject to the jurisdiction thereof means, with respect to a person born in the United States, that the person was born to a parent who is, at the time of the person’s birth— (1) a national of the United States; (2) a refugee; (3) an alien lawfully admitted for permanent residence; or (4) an alien performing active service in the armed forces (as defined in section 101 of title 10, United States Code). . 5. Effective date The amendments made by this Act shall apply to persons born on or after the date of the enactment of this Act.