; or (II) the equity securities of the entity are primarily traded on one or more foreign exchanges. (ii) Exception For purposes of subparagraph (A), the term foreign entity does not include an entity that demonstrates to the Committee that a majority of the equity interest in the entity is ultimately owned by United States nationals. (11) Intelligence community The term intelligence community has the meaning given that term in section 3(4) of the National Security Act of 1947 ( 50 U.S.C. 3003(4) ). (12) Investment The term investment means the acquisition of equity interest, including contingent equity interest, as further defined in regulations prescribed by the Committee. (13) Lead agency The term lead agency means the agency or agencies designated as the lead agency or agencies pursuant to subsection (k)(5). (14) National security The term national security shall be construed so as to include those issues relating to homeland security , including its application to critical infrastructure. (15) Party The term party has the meaning given that term in regulations prescribed by the Committee. (16) United States The term United States means the several States, the District of Columbia, and any territory or possession of the United States. (17) United States business The term United States business means a person engaged in interstate commerce in the United States. . 1704. Acceptance of written notices Section 721(b)(1)(C)(i) of the Defense Production Act of 1950 ( 50 U.S.C. 4565(b)(1)(C)(i) ) is amended— (1) by striking Any party and inserting the following: (I) In general Any party