§ 542.521 Activities and services related to certain nonimmigrant and immigrant categories authorized.

(a) U.S. persons are authorized to engage in all transactions in the United States with persons otherwise eligible for non-immigrant classification under categories A–3 and G–5 (attendants, servants and personal employees of aliens in the United States on diplomatic status), D (crewmen), F (students), I (information media representatives), J (exchange visitors), M (non-academic students), O (aliens with extraordinary ability), P (athletes, artists, and entertainers), Q (international cultural exchange visitors), R (religious workers), or S (witnesses), to the extent such a visa has been granted by the U.S. Department of State or such non-immigrant status, or related benefit, has been granted by the U.S. Department of Homeland Security.

(b) U.S. persons are authorized to engage in all transactions in the United States with persons otherwise eligible for non-immigrant classification under categories E–2 (treaty investor), H (temporary worker), or L (intra-company transferee) and all immigrant classifications, to the extent such a visa has been granted by the U.S. Department of State or such non-immigrant or immigrant status, or related benefit, has been granted by the U.S. Department of Homeland Security, and provided that the persons are not coming to the United States to work as an agent, employee, or contractor of the Government of Syria or an entity in Syria.