operations. V Economic diplomacy 501. Duties of officers performing economic functions (a) In general Chapter 5 of title I of the Foreign Service Act of 1980 ( 22 U.S.C. 3981 et seq. ) is amended by adding at the end the following new section: 506. Duties of officers performing economic functions (a) Defined term In this section, the term United States person means— (1) a United States citizen or an alien lawfully admitted for permanent residence to the United States