; or (C) conducting any transaction involving such property. (10) Ban on investment in equity or debt of sanctioned person The President may, pursuant to such regulations or guidelines as the President may prescribe, prohibit any United States person from investing in or purchasing significant amounts of equity or debt instruments of the sanctioned person. (11) Exclusion of corporate officers The President may direct the Secretary of State to deny a visa to, and the Secretary of Homeland Security to exclude from the United States, any alien that the President determines is a corporate officer or principal of, or a shareholder with a controlling interest in, the sanctioned person. (12) Sanctions on principal executive officers The President may impose on the principal executive officer or officers of the sanctioned person, or on persons performing similar functions and with similar authorities as such officer or officers, any of the sanctions under this subsection. (b) Sanctioned person defined In this section, the term sanctioned person means a person subject to sanctions under section 224(a)(2), 231(b), 232(a), or 233(a). 236. Exceptions, waiver, and termination (a) Exceptions The provisions of this part and amendments made by this part shall not apply with respect to the following: (1) Activities subject to the reporting requirements under title V of the National Security Act of 1947 ( 50 U.S.C. 3091 et seq.), or any authorized intelligence activities of the United States. (2) The admission of an alien to the United States if such admission is necessary to comply with United States obligations under the Agreement between the United Nations and the United States of America regarding the Headquarters of the United Nations, signed at Lake Success June 26, 1947, and entered into force November 21, 1947, under the Convention on Consular Relations, done at Vienna April 24, 1963, and entered into force March 19, 1967, or under other international agreements. (b) Exception relating to importation of goods No