; and ; and (C) by adding at the end the following: (N) a citizen or national of Afghanistan who is the parent or brother or sister of— (i) a member of the armed forces (as defined in section 101(a) of title 10, United States Code); or (ii) a veteran (as defined in section 101 of title 38, United States Code). . (2) Numerical limitations (A) In general Subject to subparagraph (C), the total number of principal aliens who may be provided special immigrant visas under subparagraph (N) of section 101(a)(27) of the Immigration and Nationality Act ( 8 U.S.C. 1101(a)(27) ), as added by paragraph (1), may not exceed 2,500 each fiscal year. (B) Carryover If the numerical limitation specified in subparagraph (A) is not reached during a given fiscal year, the numerical limitation specified in such subparagraph for the following fiscal year shall be increased by a number equal to the difference between— (i) the numerical limitation specified in subparagraph (A) for the given fiscal year; and (ii) the number of principal aliens provided special immigrant visas under subparagraph (N) of section 101(a)(27) of the Immigration and Nationality Act ( 8 U.S.C. 1101(a)(27) ) during the given fiscal year. (C) Maximum number of visas The total number of aliens who may be provided special immigrant visas under subparagraph (N) of section 101(a)(27) of the Immigration and Nationality Act ( 8 U.S.C. 1101(a)(27) ) shall not exceed 10,000. (D) Duration of authority The authority to issue visas under subparagraph (N) of section 101(a)(27) of the Immigration and Nationality Act ( 8 U.S.C. 1101(a)(27) ) shall— (i) commence on the date of the enactment of this Act; and (ii) terminate on the date on which all such visas are exhausted. (b) Certain Afghans injured or killed in the course of employment Section 602(b) of the Afghan Allies Protection Act of 2009 ( 8 U.S.C. 1101 note