---
kind: "unit"
title: "19"
title_heading: "Customs Duties"
key: "chI/part123"
level: "part"
label: "Part 123"
heading: "Cbp Relations with Canada and Mexico"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/19/chI-part123"
sections_count: 44
---

# Part 123 — Cbp Relations with Canada and Mexico

Title 19 C.F.R. — Customs Duties › Chapter I — U.s. Customs and Border Protection, Department of Homeland Security; Department of the Treasury

## Sections

- [§123.0. Scope.](/cfr/19/123.0.md)

## Contents

- [Subpart A — General Provisions](/cfr/19/chI-part123-subpartA.md)
- [Subpart B — International Traffic](/cfr/19/chI-part123-subpartB.md)
- [Subpart C — Shipments in Transit Through Canada or Mexico](/cfr/19/chI-part123-subpartC.md)
- [Subpart D — Shipments in Transit Through the United States](/cfr/19/chI-part123-subpartD.md)
- [Subpart E — United States and Canada In-Transit Truck Procedures](/cfr/19/chI-part123-subpartE.md)
- [Subpart F — Commercial Traveler's Samples in Transit Through the United States or Canada](/cfr/19/chI-part123-subpartF.md)
- [Subpart G — Baggage](/cfr/19/chI-part123-subpartG.md)
- [Subpart H — Subpart H [Reserved]](/cfr/19/chI-part123-subpartH.md)
- [Subpart I — Miscellaneous Provisions](/cfr/19/chI-part123-subpartI.md)
- [Subpart J — Advance Information for Cargo Arriving by Rail or Truck](/cfr/19/chI-part123-subpartJ.md)