19 CFR § 123.2 - Penalty for failure to report arrival or for proceeding without a permit.
(a) Persons. Any person arriving otherwise than by conveyance who enters the U.S. at other than a designated port of entry, or Customs station if authorization exists for entry at that station, who fails to report arrival as required in § 123.1(a) of this part, or who departs from the port of entry or Customs station without authorization by the appropriate Customs officer, whether or not intentionally, shall be subject to such civil and criminal penalties as are prescribed under 19 U.S.C. 1459 and provided for in § 123.1 of this part.
(b) Vessels. The penalty provisions applicable to vessels for failure to report arrival or for proceeding without a permit are those as provided in § 4.3a.
(c) Vehicles -
(1) Civil penalties. The person in charge of any vehicle who -
(ii) Fails to report arrival and present the vehicle and all persons and merchandise (including baggage) on board for inspection as required in § 123.1(b) of this part;
(iii) Fails to file a manifest or any other document required to be filed in connection with arrival in the U.S. under this part; or
(iv) Without authorization by the appropriate Customs officer, removes such vehicle from the port of entry or Customs station or discharges any passenger or merchandise (including baggage) shall be subject to such civil penalties as are prescribed in section 436, Tariff Act of 1930, as amended (19 U.S.C. 1436), and any conveyance used in connection with any such violation shall be subject to seizure and forfeiture. The person also may be subject to an additional civil penalty equal to the value of the merchandise on the conveyance which was not entered or reported as required by § 123.1(b) of this part, and that merchandise may be subject to seizure and forfeiture unless properly entered by the importer or consignee. If the merchandise consists of any controlled substances, additional penalties may be assessed, as prescribed in section 584, Tariff Act of 1930, as amended (19 U.S.C. 1584).
(2) Criminal penalties. Upon conviction, any person in charge of a vehicle who intentionally commits any of the violations described in paragraph (c)(1) of this section shall, in addition to the penalties described therein, be subject to such additional criminal penalties as are prescribed in section 436, Tariff Act of 1930, as amended (19 U.S.C. 1436). If the vehicle has or is discovered to have had on board any merchandise (other than sea stores or the equivalent for conveyances other than vessels) the importation of which into the U.S. is prohibited, the person in charge of the vehicle is subject to such additional criminal penalties as are prescribed in section 436, Tariff Act of 1930, as amended (19 U.S.C. 1436).