---
kind: "unit"
title: "18"
title_heading: "Crimes and Criminal Procedure"
key: "ptI/ch23"
level: "chapter"
label: "Chapter 23"
heading: "Contracts"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/18/ptI-ch23"
sections_count: 12
---

# Chapter 23 — Contracts

Title 18 — Crimes and Criminal Procedure › Part I — Crimes

## Sections

- [§431. Contracts by Member of Congress](/usc/18/431.md)
- [§432. Officer or employee contracting with Member of Congress](/usc/18/432.md)
- [§433. Exemptions with respect to certain contracts](/usc/18/433.md)
- [§434. Repealed.](/usc/18/434.md)
- [§435. Contracts in excess of specific appropriation](/usc/18/435.md)
- [§436. Convict labor contracts](/usc/18/436.md)
- [§437. Repealed.](/usc/18/437.md)
- [§439. Repealed.](/usc/18/439.md)
- [§440. Mail contracts](/usc/18/440.md)
- [§441. Postal supply contracts](/usc/18/441.md)
- [§442. Government Publishing Office](/usc/18/442.md)
- [§443. War contracts](/usc/18/443.md)