the appropriate congressional committees on the reasons for the waiver. (f) Implementation The President may exercise all authorities provided under sections 203 and 205 of the International Emergency Economic Powers Act (50 U.S.C. 1702 and 1704) to carry out this section. (g) Regulations (1) In general The President shall, not later than 120 days after the date of the enactment of this Act, promulgate regulations as necessary for the implementation of this section. (2) Notification to congress Not later than 10 days before the promulgation of regulations under this subsection, the President shall notify the appropriate congressional committees of the proposed regulations and the provisions of this section that the regulations are implementing. (h) Exceptions (1) Exception for intelligence activities Sanctions under this section shall not apply to any activity 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) Exception to comply with international obligations and for law enforcement activities Sanctions under this section shall not apply with respect to an alien if admitting or paroling the alien into the United States is necessary— (A) 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