Administrative Provisions
- part 1—definitions (§§ 231 – 240)
- part 2—report, entry, and unlading of vessels and vehicles (§§ 241 – 294)
- part 3—ascertainment, collection, and recovery of duties (§§ 331 – 420)
- part 4—transportation in bond and warehousing of merchandise (§§ 451 – 472)
- part 5—enforcement provisions (§§ 481 – 541)
- part 6—general provisions (§§ 571 – 580)