| Section No. | Description |
|---|---|
| Section 101.0 | Definitions |
| Section 101.1 | Authority of Customs officers |
| Section 101.2 | Customs service ports and ports of entry |
| Section 101.3 | Entry and clearance of vessels at Customs stations |
| Section 101.4 | CBP preclearance offices in foreign countries |
| Section 101.5 | Hours of business |
| Section 101.6 | Customs seal |
| Section 101.7 | Identification cards |
| Section 101.8 | Test programs or procedures; alternate requirements |
| Section 101.9 | Scope |