; (2) maintaining a robust special immigrant visa program for Afghan allies is necessary to support United States Government personnel in Afghanistan who need translation, interpretation, security, and other services; (3) Afghan allies routinely risk their lives to assist United States military and diplomatic personnel; (4) honoring the commitments made to Afghan allies with respect to such special immigrant visa program is essential to ensuring the continued service and safety of such allies; and (5) an additional 4,000 visas should be made available to principal aliens who are eligible for special immigrant status under the Afghan Allies Protection Act of 2009 ( 8 U.S.C. 1101 note) to prevent harm to the operations of the United States Government in Afghanistan. C Matters relating to Syria, Iraq, and Iran 1221. Modification of authority to provide assistance to vetted Syrian groups (a) Nature of assistance Subsection (a) of section 1209 of the Carl Levin and Howard P. Buck McKeon National Defense Authorization Act for Fiscal Year 2015 ( Public Law 113–291 ; 128 Stat. 3541), as most recently amended by section 1231(a) of the John S. McCain National Defense Authorization Act for Fiscal Year 2019 ( Public Law 115–232 ), is further amended— (1) in the matter preceding paragraph (1), by striking with a cost and all that follows through December 31, 2019 and inserting , and sustainment to appropriately vetted Syrian groups and individuals, through December 31, 2020 ; (2) in paragraph (1), by striking Islamic State of Iraq and the Levant and all that follows through the period at the end and inserting the following: Islamic State of Iraq and Syria (ISIS).