; and (2) is organized under the laws of a jurisdiction that the President determines to have exported more than the aggregate amount of 4,000,000 barrels of crude oil during any 12-month period to North Korea. (c) Sanctions described The sanctions described in this subsection are the following: (1) Asset blocking The President may block and prohibit all transactions in all property and interests in property of a person described in subsection (b) 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. (2) Ban on investment in equity or debt 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 person described in subsection (b). (3) 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 person described in subsection (b). (4) Sanctions on principal executive officers The President may impose on the principal executive officer or officers of the person described in subsection (b), or on persons performing similar functions and with similar authorities as such officer or officers, any of the sanctions under this subsection. (d) Waivers (1) Efforts to enforce united nations limits The President may waive the application of sanctions under subsection (a) if the President certifies to Congress that the jurisdiction described in subsection (b)(2) is applying appropriate effort to— (A) fulfill its obligation under international law to prohibit its nationals, individuals otherwise subject to its jurisdiction, entities incorporated in its territory or subject to its jurisdiction, and vessels flying