19 C.F.R. § 113.4 Bonds and carnets.
Title 19 - Customs Duties
(a) Bonds. All bonds required to be given under the Customs laws or regulations shall be known as Customs bonds. (b) Carnets. A carnet is an international customs document which serves simultaneously as a customs entry document and as a customs bond. Therefore, carnets, provided for in part 114 of this chapter, are ordinarily acceptable without posting further security under the Customs laws or regulations requiring bonds.
Title 19: Customs Duties
PART 113—CUSTOMS BONDS
Subpart A—General Provisions
§ 113.4 Bonds and carnets.