; (2) to deny Iran funds to oppress and commit human rights violations against the Iranian people assembling to peacefully redress the Iranian regime; (3) to fully enforce sanctions against those entities which provide support to the Iranian energy sector; and (4) to counter Iran’s actions to finance and facilitate the participation of foreign terrorist organizations in ongoing conflicts and illicit activities due to the threat such actions pose to the vital national interests of the United States. 3. Imposition of sanctions with respect to Iranian petroleum (a) In general On and after the date that is 180 days after the date of the enactment of this Act, and except as provided in subsection (e)(2), the President shall impose the sanctions described in subsection (c) with respect to each foreign person that the President determines knowingly engaged, on or after such date of enactment, in an activity described in subsection (b). (b) Activities described A foreign person engages in an activity described in this subsection if the foreign person— (1) owns or operates a foreign port at which, on or after the date of the enactment of this Act, such person knowingly permits to dock a vessel— (A) that is included on the list of specially designated nationals and blocked persons maintained by the Office of Foreign Assets Control of the Department of the Treasury for transporting Iranian crude oil or petroleum products; or (B) of which the operator or owner of such vessel otherwise knowingly engages in a significant transaction involving such vessel to transport, offload, or deal in significant transactions in condensate, refined, or unrefined petroleum products, or other petrochemical products originating from the Islamic Republic of Iran; (2) owns or operates a vessel through which such owner knowingly conducts a ship to ship transfer involving a significant transaction of any petroleum product originating from the Islamic Republic of Iran