No designated archaeological or ethnological material that is exported (whether or not such exportation is to the United States) from the State Party after the designation of such material under section 2604 of this title may be imported into the United States unless the State Party issues a certification or other documentation which certifies that such exportation was not in violation of the laws of the State Party.
19 U.S. Code § 2606 - Import restrictions
Section effective on the 90th day after Jan. 12, 1983, or on any date which the President shall prescribe and publish in the Federal Register, with exceptions, see section 315 of Pub. L. 97–446, set out as a note under section 2601 of this title.
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