; and (B) the specific provisions of this Act that the regulations are implementing. (f) Waiver (1) In general The President may, on a case-by-case basis and for periods not to exceed 180 days each, waive the application of sanctions imposed with respect to a foreign person under this section if the President certifies to the appropriate congressional committees, not later than 15 days before such waiver is to take effect, that the waiver is vital to the national interests of the United States. (2) Special rule The President shall not be required to impose sanctions under this section with respect to a foreign person described in subsection (a) if the President certifies in writing to the appropriate congressional committees that the foreign person— (A) is no longer engaging in activities described in subsection (b); or (B) has taken and is continuing to take significant, verifiable steps toward permanently terminating such activities. (f) Termination The authorities provided by this section shall cease to have effect on and after the date that is 30 days after the date on which the President certifies to the appropriate congressional committees that— (1) the Government of Iran no longer repeatedly provides support for international terrorism as determined by the Secretary of State pursuant to— (A) section 1754(c)(1)(A) of the Export Control Reform Act of 2018 ( 50 U.S.C. 4318(c)(1)(A) ); (B) section 620A of the Foreign Assistance Act of 1961 ( 22 U.S.C. 2371 ); (C) section 40 of the Arms Export Control Act ( 22 U.S.C. 2780 ); or (D) any other provision of law