are sanctions pursuant to the International Emergency Economic Powers Act ( 50 U.S.C. 1701 et seq.) to block and prohibit all transactions in property and interests in property of a person designated under 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. (c) Exception (1) In general A person may not be designated under subsection (a) if the President certifies to the appropriate congressional committees that the President has received reliable assurances from such person that— (A) the employment of North Korean laborers does not result in the direct or indirect transfer of convertible currency, luxury goods, or other stores of value to the Government of North Korea