---
kind: "section"
citation: "10 U.S.C. § 493"
title: "10"
title_heading: "Armed Forces"
number: "493"
heading: "Reports to Congress on the modification of the force structure for the strategic nuclear weapons delivery systems of the United States"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/10/493"
units:
  - "Subtitle A — General Military Law"
  - "Part I — Organization and General Military Powers"
  - "Chapter 24 — Nuclear Posture"
---

# §493. Reports to Congress on the modification of the force structure for the strategic nuclear weapons delivery systems of the United States


Whenever after December 31, 2011, the President proposes a modification of the force structure for the strategic nuclear weapons delivery systems of the [United States](/usc/10/101.md?p=a-1), the President shall submit to Congress a report on the modification not less than 180 days before the intended effective date of the modification. The report shall include a description of the manner in which such modification will maintain for the [United States](/usc/10/101.md?p=a-1) a [range](/usc/10/101.md?p=f-1) of strategic nuclear weapons delivery systems appropriate for the current and anticipated threats faced by the [United States](/usc/10/101.md?p=a-1) when compared with the current force structure of strategic nuclear weapons delivery systems.


## Source credit

(Added and amended Pub. L. 112–239, div. A, title X, § 1031(b)(3)(B), (C)(ii), Jan. 2, 2013, 126 Stat. 1918, 1919; Pub. L. 113–66, div. A, title X, § 1091(b)(5), Dec. 26, 2013, 127 Stat. 876; Pub. L. 117–81, div. A, title XVI, § 1634, Dec. 27, 2021, 135 Stat. 2091.)

## Notes

### Editorial Notes

### Codification

The text of this section is based on Pub. L. 112–81, div. A, title X, § 1077, Dec. 31, 2011, 125 Stat. 1596. Section 1077 of Pub. L. 112–81, formerly classified to section 2514 of Title 50, War and National Defense, was transferred to this section by Pub. L. 112–239, § 1031(b)(3)(B)(i)–(iii).

### Amendments

2021—Pub. L. 117–81 inserted “not less than 180 days before the intended effective date of the modification” after “report on the modification”.

2013—Pub. L. 112–239, § 1031(b)(3)(C)(ii), made technical amendments to conform section enumerator and catchline to the style of this title. See Codification note above.

Pub. L. 112–239, § 1031(b)(3)(B)(iv), as amended by Pub. L. 113–66, § 1091(b)(5), substituted “December 31, 2011,” for “the date of the enactment of this Act”.

### Statutory Notes and Related Subsidiaries

### Effective Date of 2013 Amendment

Pub. L. 113–66, div. A, title X, § 1091(b), Dec. 26, 2013, 127 Stat. 876, provided in part that the amendment made by section 1091(b)(5) is effective as of Jan. 2, 2013, and as if included in Pub. L. 112–239 as enacted.