19 CFR § 113.4
Bonds and carnets
July 16, 2020
(a) Bonds. All bonds required to be given under the customs laws or CBP regulations will be known as CBP 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 CBP regulations requiring bonds.
[T.D. 84-213, 49 FR 41171, Oct. 19, 1984, as amended by CBP Dec. 15-15, 80 FR 70163, Nov. 13, 2015]