; and (II) shall automatically cancel any other valid visa or documentation that is in the possession of the alien who is the subject of such revocation. (C) Exception to comply with United Nations headquarters agreement The sanctions under this paragraph shall not be imposed on an individual if admitting such individual to the United States is necessary to permit the United States to comply with the Agreement regarding the Headquarters of the United Nations, signed at Lake Success June 26, 1947, and entered into force November 21, 1947, between the United Nations and the United States, or with other applicable international agreements. (d) Waiver The President may, on a case-by-case basis, waive the application of a sanction under this section with respect to a person or an agency or instrumentality of a foreign state for periods not longer than 180 days if the President certifies to the appropriate congressional committees that such waiver is in the national security interest of the United States. (e) Penalties The penalties provided for in subsections (b) and (c) of section 206 of the International Emergency Economic Powers Act ( 50 U.S.C. 1705 ) shall apply to any person that violates, attempts to violate, conspires to violate, or causes a violation of any regulation promulgated to carry out this section to the same extent that such penalties apply to a person that commits an unlawful act described in section 206(a) of such Act. (f) Regulations (1) In general The President may exercise all authorities provided to the President under sections 203 and 205 of the International Emergency Economic Powers Act ( 50 U.S.C. 1702 and 1704) for purposes of carrying out this section. (2) Issuance of regulations Not later than 180 days after the date of the enactment of this Act, the President shall prescribe such regulations as may be necessary to implement this section. (g) Rule of construction Nothing in this section may be construed— (1) to limit the authorities of the President pursuant to the International Emergency