- § 631. Omitted
- § 632. Omitted
- § 633. Omitted
- § 634. Omitted
- § 635. Omitted
- § 636. Omitted
- § 637. Omitted
- § 638. Omitted
- § 639. Repealed. Pub. L. 104–193, title I, § 110(u), Aug. 22, 1996, 110 Stat. 2175
- § 640. Repealed. Pub. L. 93–531, § 26, Dec. 22, 1974, 88 Stat. 1723
- § 640a. Omitted
- § 640b. Omitted
- § 640c. Omitted
- § 640c–1. Omitted
- § 640c–2. Omitted
- § 640c–3. Omitted