16 U.S. Code § 4223 - Prohibited acts
Prohibited actsExcept as provided in section 4222(e) of this title, it is unlawful for any person—
to import raw or worked ivory that was exported from an ivory producing country in violation of that country’s laws or of the CITES Ivory Control System;
to import worked ivory, other than personal effects, from any country unless that country has certified that such ivory was derived from legal sources; or
to import raw or worked ivory from a country for which a moratorium is in effect under section 4222 of this title.