21 U.S. Code § 881 - Forfeitures
(a) Subject property
The following shall be subject to forfeiture to the United States and no property right shall exist in them:
(1) All controlled substances which have been manufactured, distributed, dispensed, or acquired in violation of this subchapter.
(2) All raw materials, products, and equipment of any kind which are used, or intended for use, in manufacturing, compounding, processing, delivering, importing, or exporting any controlled substance or listed chemical in violation of this subchapter.
(3) All property which is used, or intended for use, as a container for property described in paragraph (1), (2), or (9).
(4) All conveyances, including aircraft, vehicles, or vessels, which are used, or are intended for use, to transport, or in any manner to facilitate the transportation, sale, receipt, possession, or concealment of property described in paragraph (1), (2), or (9).
(5) All books, records, and research, including formulas, microfilm, tapes, and data which are used, or intended for use, in violation of this subchapter.
(6) All moneys, negotiable instruments, securities, or other things of value furnished or intended to be furnished by any person in exchange for a controlled substance or listed chemical in violation of this subchapter, all proceeds traceable to such an exchange, and all moneys, negotiable instruments, and securities used or intended to be used to facilitate any violation of this subchapter.
(7) All real property, including any right, title, and interest (including any leasehold interest) in the whole of any lot or tract of land and any appurtenances or improvements, which is used, or intended to be used, in any manner or part, to commit, or to facilitate the commission of, a violation of this subchapter punishable by more than one year’s imprisonment.
(8) All controlled substances which have been possessed in violation of this subchapter.
(9) All listed chemicals, all drug manufacturing equipment, all tableting machines, all encapsulating machines, and all gelatin capsules, which have been imported, exported, manufactured, possessed, distributed, dispensed, acquired, or intended to be distributed, dispensed, acquired, imported, or exported, in violation of this subchapter or subchapter II of this chapter.
(10) Any drug paraphernalia (as defined in section 863 of this title).
(11) Any firearm (as defined in section 921 of title 18) used or intended to be used to facilitate the transportation, sale, receipt, possession, or concealment of property described in paragraph (1) or (2) and any proceeds traceable to such property.
(b) Seizure procedures
Any property subject to forfeiture to the United States under this section may be seized by the Attorney General in the manner set forth in section 981 (b) of title 18.
Section 981 - Seizures
(1) Except as provided in section 985, any property subject to forfeiture to the United States under subsection (a) may be seized by the Attorney General and, in the case of property involved in a violation investigated by the Secretary of the Treasury or the United States Postal Service, the property may also be seized by the Secretary of the Treasury or the Postal Service, respectively.
(2) Seizures pursuant to this section shall be made pursuant to a warrant obtained in the same manner as provided for a search warrant under the Federal Rules of Criminal Procedure, except that a seizure may be made without a warrant if—
(A) a complaint for forfeiture has been filed in the United States district court and the court issued an arrest warrant in rem pursuant to the Supplemental Rules for Certain Admiralty and Maritime Claims;
(B) there is probable cause to believe that the property is subject to forfeiture and—
(i) the seizure is made pursuant to a lawful arrest or search; or
(ii) another exception to the Fourth Amendment warrant requirement would apply; or
(C) the property was lawfully seized by a State or local law enforcement agency and transferred to a Federal agency.
(3) Notwithstanding the provisions of rule 41(a) of the Federal Rules of Criminal Procedure, a seizure warrant may be issued pursuant to this subsection by a judicial officer in any district in which a forfeiture action against the property may be filed under section 1355 (b) of title 28, and may be executed in any district in which the property is found, or transmitted to the central authority of any foreign state for service in accordance with any treaty or other international agreement. Any motion for the return of property seized under this section shall be filed in the district court in which the seizure warrant was issued or in the district court for the district in which the property was seized.
(A) If any person is arrested or charged in a foreign country in connection with an offense that would give rise to the forfeiture of property in the United States under this section or under the Controlled Substances Act, the Attorney General may apply to any Federal judge or magistrate judge in the district in which the property is located for an ex parte order restraining the property subject to forfeiture for not more than 30 days, except that the time may be extended for good cause shown at a hearing conducted in the manner provided in rule 43(e) of the Federal Rules of Civil Procedure.
(B) The application for the restraining order shall set forth the nature and circumstances of the foreign charges and the basis for belief that the person arrested or charged has property in the United States that would be subject to forfeiture, and shall contain a statement that the restraining order is needed to preserve the availability of property for such time as is necessary to receive evidence from the foreign country or elsewhere in support of probable cause for the seizure of the property under this subsection.