Administrative Provisions— (§§ 231—580)
- part 1—definitions (§§ 231—240)
- part 2—report, entry, and unlading of vessels and vehicles (§§ 241_to_256—294)
- part 3—ascertainment, collection, and recovery of duties (§§ 331_to_337—420)
- part 4—transportation in bond and warehousing of merchandise (§§ 451_to_459—472_to_475)
- part 5—enforcement provisions (§§ 481—541,_542)
- part 6—general provisions (§§ 571_to_573—580)