; (3) to sanction entities that violate the laws of the United States by providing support to the Iranian energy sector; and (4) that the actions of the Islamic Republic of Iran to finance and facilitate the participation of foreign terrorist organizations in ongoing conflicts and illicit activities is detrimental to the national security interests of the United States. 4. Sanctions with respect to foreign persons that engage in certain transactions (a) Imposition of sanctions (1) In general On and after the date that is 90 days after the date of the enactment of this Act, the President shall impose the sanctions described in subsection (b) with respect to a foreign person that the President determines knowingly engaged, on or after such date of enactment, in an activity described in paragraph (2). (2) Activities described A foreign person engages in an activity described in this paragraph if the foreign person— (A) owns or operates a foreign port that, on or after the date of the enactment of this Act, permitted to dock at such foreign port a vessel— (i) 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 (ii) of which the operator or owner of such vessel otherwise knowingly engages in a significant transaction to transport, offload, or deal in condensate, refined, or unrefined petroleum products, or other petrochemical products originating from the Islamic Republic of Iran; (B) owns or operates a vessel that conducts a sea-to-sea transfer involving a significant transaction of any petroleum product originating from the Islamic Republic of Iran; (C) owns or operates a refinery that engages in a significant transaction to process, refine, or otherwise deal in any petroleum product originating from the Islamic Republic of Iran; (D) is a family member of a foreign person described in subparagraph (A), (B), or (C)