; or (3) is owned or controlled by a foreign person, or is acting on behalf of a foreign person described in paragraph (1). (b) Sanctions described The sanctions described in this subsection are the following: (1) Asset blocking The exercise of all powers granted to the President by the International Emergency Economic Powers Act ( 50 U.S.C. 1701 et seq.) to the extent necessary to block and prohibit all transactions in all property and interests in property of a person determined by the President to be a person described in subsection (a) if such property and interests in property are in the United States, come within the United States, or are or come within the possession or control of a United States person, including by taking any of the actions described in paragraph (1) of section 203(a) of such Act ( 50 U.S.C. 1702(a) ) with respect to regions of Abkhazia and Tskhinvali Region/South Ossetia forcibly occupied by the Russian Federation. (2) Exclusion from the United States and revocation of visa or other documentation (A) In general In the case of an alien determined by the President to be a person described in subsection (a), denial of a visa to, and exclusion from the United States of, such alien, and revocation in accordance with section 221(i) of the Immigration and Nationality Act ( 8 U.S.C. 1201(i) ), of any visa or other documentation of such alien. (B) Exception to comply with United Nations Headquarters Agreement and law enforcement objectives Sanctions under subparagraph (A) shall not apply to an individual if admitting the individual into the United States would further important law enforcement objectives or 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. (c) Waiver The President may waive the application of sanctions under