Whoever knowingly effects any entry of goods, wares, or merchandise, at less than the true weight or measure thereof, or upon a false classification as to quality or value, or by the payment of less than the amount of duty legally due, shall be fined under this title or imprisoned not more than two years, or both.

Whoever enters or introduces, or attempts to enter or introduce, into the commerce of the United States any imported merchandise by means of any fraudulent or false invoice, declaration, affidavit, letter, paper, or by means of any false statement, written or verbal, or by means of any false or fraudulent practice or appliance, or makes any false statement in any declaration without reasonable cause to believe the truth of such statement, or procures the making of any such false statement as to any matter material thereto without reasonable cause to believe the truth of such statement, whether or not the United States shall or may be deprived of any lawful duties; or

Whoever is guilty of any willful act or omission whereby the United States shall or may be deprived of any lawful duties accruing upon merchandise embraced or referred to in such invoice, declaration, affidavit, letter, paper, or statement, or affected by such act or omission—

Shall be fined for each offense under this title or imprisoned not more than two years, or both.

Nothing in this section shall be construed to relieve imported merchandise from forfeiture under other provisions of law.

The term “commerce of the United States”, as used in this section, shall not include commerce with the Virgin Islands, American Samoa, Wake Island, Midway Islands, Kingman Reef, Johnston Island, or Guam.

Whoever, being an officer of the revenue, knowingly admits to entry, any goods, wares, or merchandise, upon payment of less than the amount of duty legally due, shall be fined under this title or imprisoned not more than two years, or both, and removed from office.

If any merchandise entered or withdrawn for exportation without payment of the duties thereon, or with intent to obtain a drawback of the duties paid, or of any other allowances given by law on the exportation thereof, is relanded at any place in the United States without entry having been made, such merchandise shall be considered as having been imported into the United States contrary to law, and each person concerned shall be fined under this title or imprisoned not more than two years, or both; and such merchandise shall be forfeited.

The term “any place in the United States”, as used in this section, shall not include the Virgin Islands, American Samoa, Wake Island, Midway Islands, Kingman Reef, Johnston Island, or Guam.

Whoever knowingly and willfully, with intent to defraud the United States, smuggles, or clandestinely introduces or attempts to smuggle or clandestinely introduce into the United States any merchandise which should have been invoiced, or makes out or passes, or attempts to pass, through the customhouse any false, forged, or fraudulent invoice, or other document or paper; or

Whoever fraudulently or knowingly imports or brings into the United States, any merchandise contrary to law, or receives, conceals, buys, sells, or in any manner facilitates the transportation, concealment, or sale of such merchandise after importation, knowing the same to have been imported or brought into the United States contrary to law—

Shall be fined under this title or imprisoned not more than 20 years, or both.

Proof of defendant’s possession of such goods, unless explained to the satisfaction of the jury, shall be deemed evidence sufficient to authorize conviction for violation of this section.

Merchandise introduced into the United States in violation of this section, or the value thereof, to be recovered from any person described in the first or second paragraph of this section, shall be forfeited to the United States.

The term “United States”, as used in this section, shall not include the Virgin Islands, American Samoa, Wake Island, Midway Islands, Kingman Reef, Johnston Island, or Guam.

Any person owning in whole or in part any vessel of the United States who employs, or participates in, or allows the employment of, such vessel for the purpose of smuggling, or attempting to smuggle, or assisting in smuggling, any merchandise into the territory of any foreign government in violation of the laws there in force, if under the laws of such foreign government any penalty or forfeiture is provided for violation of the laws of the United States respecting the customs revenue, and any citizen of, or person domiciled in, or any corporation incorporated in, the United States, controlling or substantially participating in the control of any such vessel, directly or indirectly, whether through ownership of corporate shares or otherwise, and allowing the employment of said vessel for any such purpose, and any person found, or discovered to have been, on board of any such vessel so employed and participating or assisting in any such purpose, shall be fined under this title or imprisoned not more than two years, or both.

It shall constitute an offense under this section to hire out or charter a vessel if the lessor or charterer has knowledge or reasonable grounds for belief that the lessee or person chartering the vessel intends to employ such vessel for any of the purposes described in this section and if such vessel is, during the time such lease or charter is in effect, employed for any such purpose.

Whoever receives or deposits any merchandise in any building upon the boundary line between the United States and any foreign country, or carries any merchandise through the same, in violation of law, shall be fined under this title or imprisoned not more than two years, or both.

Whoever fraudulently conceals, removes, or repacks merchandise in any bonded warehouse or fraudulently alters, defaces or obliterates any marks or numbers placed upon packages deposited in such warehouse, shall be fined under this title or imprisoned not more than two years, or both.

Merchandise so concealed, removed, or repacked, or packages upon which any marks or numbers have been so altered, defaced, or obliterated, shall be forfeited to the United States.

Whoever, without authority, affixes or attaches a customs seal, fastening, or mark, or any seal, fastening, or mark purporting to be a customs seal, fastening, or mark to any vessel, vehicle, warehouse, or package; or

Whoever, without authority, willfully removes, breaks, injures, or defaces any customs seal or other fastening or mark placed upon any vessel, vehicle, warehouse, or package containing merchandise or baggage in bond or in customs custody; or

Whoever maliciously enters any bonded warehouse or any vessel or vehicle laden with or containing bonded merchandise with intent unlawfully to remove therefrom any merchandise or baggage therein, or unlawfully removes any merchandise or baggage in such vessel, vehicle, or bonded warehouse or otherwise in customs custody or control; or

Whoever receives or transports any merchandise or baggage unlawfully removed from any such vessel, vehicle, or warehouse, knowing the same to have been unlawfully removed—

Shall be fined under this title or imprisoned not more than 10 years, or both.

Whoever knowingly and willfully files any false or fraudulent entry or claim for the payment of drawback, allowance, or refund of duties upon the exportation of merchandise, or knowingly or willfully makes or files any false affidavit, abstract, record, certificate, or other document, with a view to securing the payment to himself or others of any drawback, allowance, or refund of duties, on the exportation of merchandise, greater than that legally due thereon, shall be fined under this title or imprisoned not more than two years, or both, and such merchandise or the value thereof shall be forfeited.

Whoever willfully conceals or destroys any invoice, book, or paper relating to any merchandise imported into the United States, after an inspection thereof has been demanded by the collector of any collection district; or

Whoever conceals or destroys at any time any such invoice, book, or paper for the purpose of suppressing any evidence of fraud therein contained—

Shall be fined under this title or imprisoned not more than two years, or both.

Whoever, being an officer, agent, or employee of the United States, knowingly aids or abets any person engaged in any violation of any of the provisions of law prohibiting importing, advertising, dealing in, exhibiting, or sending or receiving by mail obscene or indecent publications or representations, or books, pamphlets, papers, writings, advertisements, circulars, prints, pictures, or drawings containing any matter advocating or urging treason or insurrection against the United States or forcible resistance to any law of the United States, or containing any threat to take the life of or inflict bodily harm upon any person in the United States, or means for procuring abortion, or other articles of indecent or immoral use or tendency, shall be fined under this title or imprisoned not more than ten years, or both.