; (B) in clause (i), by striking December 31, 2020 and inserting December 31, 2021; ; (C) in clause (ii), by striking December 31, 2020 and inserting December 31, 2021; ; (D) by redesignating clauses (i) through (iii) as subclauses (I) through (III), respectively, and indenting appropriately; (E) in the matter preceding subclause (I), as so redesignated, in the second sentence, by striking For purposes and inserting the following: (ii) Requirements For purposes ; (F) in the matter preceding clause (ii), as so designated— (i) by striking exhausted,, and inserting exhausted, ; (ii) by striking 18,500 and inserting 22,500 ; and (iii) by striking In addition and inserting the following: (i) In general In addition ; and (G) by adding at the end the following: (iii) Unused visas Any unused balance under this subparagraph shall be added to the number under subparagraph (A)(i) for use in fiscal year 2019. . (c) Conversion of petitions Section 2 of Public Law 110–242 ( 8 U.S.C. 1101 note) is amended by striking subsection (b) and inserting the following: (b) Duration The authority under subsection (a) shall expire on the date on which the numerical limitation specified under section 1244 of the National Defense Authorization Act for Fiscal Year 2008 ( Public Law 110–181 ; 8 U.S.C. 1157 note) is reached. . 3. Special immigrant visa program reporting requirement (a) In general Not later than 180 days after the date of the enactment of this Act, the Inspector General of the Department of State shall submit to the appropriate committees of Congress a report that evaluates the obstacles to effective protection of Afghan and Iraqi allies through the special immigrant visa programs and makes recommendations for improvements in future programs. (b) Matters To be included The report under subsection (a) shall include information relating to— (1) the hiring of locally employed staff and contractors