; (ii) ineligible to receive a visa or other documentation to enter the United States; and (iii) otherwise ineligible to be admitted or paroled into the United States or to receive any other benefit under the Immigration and Nationality Act ( 8 U.S.C. 1101 et seq.). (B) Current visas revoked The visa or other entry documentation of a foreign person shall be revoked, regardless of when such visa or other entry documentation is or was issued. A revocation under this subparagraph shall take effect immediately and automatically cancel any other valid visa or entry documentation that is in the foreign person’s possession. (C) Exception to comply with United Nations Headquarters Agreement Sanctions under this paragraph shall not apply to an individual if admitting such individual into 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 other applicable international obligations of the United States. 15. Implementation (a) In general The President— (1) 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) to carry out this Act