(a) Except as provided in Sec. 536.205, the prohibitions contained in Sec. 536.201 apply to services performed by U.S. persons, wherever located:
(1) On behalf of, or for the benefit of, a specially designated narcotics trafficker; or
(2) With respect to property interests of a specially designated narcotics trafficker.
(b) Example: U.S. persons may not, except as authorized by the Office of Foreign Assets Control by or pursuant to this part, provide legal, accounting, financial, brokering, freight forwarding, transportation, public relations, educational, or other services to a specially designated narcotics trafficker. See Sec. 536.506, with respect to certain authorized legal services.