Pub. L. 101–246, title IV, §407, Feb. 16, 1990, 104 Stat. 67, as amended by Pub. L. 113–100, §1, Apr. 18, 2014, 128 Stat. 1145, provided that:
‘‘(a) IN GENERAL.—The President shall use his authority, including the authorities contained in section 6 of the United Nations Headquarters Agreement Act (Public Law 80–357) [Aug. 4, 1947, ch. 482, set out as a note under 22 U.S.C. 287], to deny any individual’s admission to the United States as a representative to the United Nations if the President determines that such individual—
‘‘(1) has been found to have been engaged in espionage activities or a terrorist activity (as defined in section 212(a)(3)(B)(iii) of the Immigration and Nationality Act (8 U.S.C. 1182(a)(3)(B)(iii))) directed against the United States or its allies; and
‘‘(2) may pose a threat to United States national security interests.
‘‘(b) WAIVER.—The President may waive the provisions of subsection (a) if the President determines, and so notifies the Congress, that such a waiver is in the national security interests of the United States.’’