19 CFR § 12.150 - Merchandise prohibited by economic sanctions; detention; seizure or other disposition; blocked property.
(a) Generally. Merchandise from certain countries designated by the President as constituting a threat to the national security, foreign policy, or economy of the United States shall be detained until the question of its release, seizure, or other disposition has been determined under law and regulations issued by the Treasury Department's Office of Foreign Assets Control (OFAC) (31 CFR Chapter V).
(b) Seizure. When an unlicensed importation of merchandise subject to OFAC's regulations is determined to be prohibited, no entry for any purpose shall be permitted and, unless the immediate reexportation or other disposition of such merchandise under Customs supervision has previously been authorized by OFAC, the merchandise shall be seized.
(c) Licenses. OFAC's regulations may authorize OFAC to issue licenses on a case-by-case basis authorizing the importation of otherwise prohibited merchandise under certain conditions. If such a license is issued subsequent to the attempted entry and seizure of the merchandise, importation shall be conditioned upon the importer:
(1) Agreeing in writing to hold the Government harmless, and
(d) Blocked property. Merchandise which constitutes property in which the government or any national of certain designated countries has an interest may be blocked (frozen) pursuant to OFAC's regulations and may not be transferred, sold, or otherwise disposed of without an OFAC license.
(e) Additional information. For further information concerning importing merchandise prohibited under economic sanctions programs currently in effect, the Office of Foreign Assets Control of the Department of the Treasury should be contacted. The address of that office is 1500 Pennsylvania Ave., NW., Annex 2nd Floor, Washington, DC 20220.