Title 18Crimes and Criminal ProcedureRelease 119-73

§2332a Use of weapons of mass destruction

Title 18 › Part PART I— - CRIMES › Chapter CHAPTER 113B— - TERRORISM › § 2332a

Last updated Apr 6, 2026|Official source

Summary

It makes it a crime to use, try to use, plan to use, or threaten to use a weapon of mass destruction without legal permission. The law covers attacks on a U.S. citizen who is abroad; attacks on people or property inside the United States when the mail, interstate or foreign commerce, travel between states, or effects on interstate or foreign commerce are involved; attacks on property owned, leased, or used by the U.S. government anywhere; and attacks on property in the United States owned, leased, or used by a foreign government. A U.S. national who does any of these acts outside the United States can be sent to prison for any number of years or for life, and if someone dies, can face death or a prison term of any number of years or for life. Key terms: "national of the United States" — defined in immigration law; "weapon of mass destruction" — includes destructive devices, chemical weapons that kill or seriously injure by releasing toxic chemicals, biological weapons using agents/toxins/vectors, and weapons designed to release dangerous radiation; "property" — all real and personal property.

Full Legal Text

Title 18, §2332a

Crimes and Criminal Procedure — Source: USLM XML via OLRC

(a)A person who, without lawful authority, uses, threatens, or attempts or conspires to use, a weapon of mass destruction—
(1)against a national of the United States while such national is outside of the United States;
(2)against any person or property within the United States, and
(A)the mail or any facility of interstate or foreign commerce is used in furtherance of the offense;
(B)such property is used in interstate or foreign commerce or in an activity that affects interstate or foreign commerce;
(C)any perpetrator travels in or causes another to travel in interstate or foreign commerce in furtherance of the offense; or
(D)the offense, or the results of the offense, affect interstate or foreign commerce, or, in the case of a threat, attempt, or conspiracy, would have affected interstate or foreign commerce;
(3)against any property that is owned, leased or used by the United States or by any department or agency of the United States, whether the property is within or outside of the United States; or
(4)against any property within the United States that is owned, leased, or used by a foreign government,
(b)Any national of the United States who, without lawful authority, uses, or threatens, attempts, or conspires to use, a weapon of mass destruction outside of the United States shall be imprisoned for any term of years or for life, and if death results, shall be punished by death, or by imprisonment for any term of years or for life.
(c)For purposes of this section—
(1)the term “national of the United States” has the meaning given in section 101(a)(22) of the Immigration and Nationality Act (8 U.S.C. 1101(a)(22));
(2)the term “weapon of mass destruction” means—
(A)any destructive device as defined in section 921 of this title;
(B)any weapon that is designed or intended to cause death or serious bodily injury through the release, dissemination, or impact of toxic or poisonous chemicals, or their precursors;
(C)any weapon involving a biological agent, toxin, or vector (as those terms are defined in section 178 of this title); or
(D)any weapon that is designed to release radiation or radioactivity at a level dangerous to human life; and
(3)the term “property” includes all real and personal property.

Legislative History

Notes & Related Subsidiaries

Editorial Notes

Amendments

2004—Pub. L. 108–458, § 6802(b)(1), struck out “certain” before “weapons” in section catchline. Subsec. (a). Pub. L. 108–458, § 6802(b)(2), struck out “(other than a chemical weapon as that term is defined in section 229F)” after “mass destruction” in introductory provisions. Subsec. (a)(2). Pub. L. 108–458, § 6802(a)(1), amended par. (2) generally. Prior to amendment, par. (2) read as follows: “against any person within the United States, and the results of such use affect interstate or foreign commerce or, in the case of a threat, attempt, or conspiracy, would have affected interstate or foreign commerce; or”. Subsec. (a)(4). Pub. L. 108–458, § 6802(a)(2), (3), added par. (4). Subsec. (b). Pub. L. 108–458, § 6802(b)(3), struck out “(other than a chemical weapon (as that term is defined in section 229F))” after “mass destruction”. Subsec. (c)(3). Pub. L. 108–458, § 6802(a)(4)–(6), added par. (3). 2002—Subsec. (a). Pub. L. 107–188, § 231(d)(1), substituted “section 229F)—” for “section 229F), including any biological agent, toxin, or vector (as those terms are defined in section 178)—” in introductory provisions. Subsec. (c)(2)(C). Pub. L. 107–188, § 231(d)(2), substituted “a biological agent, toxin, or vector (as those terms are defined in section 178 of this title)” for “a disease organism”. 1998—Pub. L. 105–277, § 201(b)(1)(A), inserted “certain” before “weapons” in section catchline. Subsec. (a). Pub. L. 105–277, § 201(b)(1)(B), inserted “(other than a chemical weapon as that term is defined in section 229F)” after “weapon of mass destruction” in introductory provisions. Subsec. (b). Pub. L. 105–277, § 201(b)(1)(C), inserted “(other than a chemical weapon (as that term is defined in section 229F))” after “weapon of mass destruction”. 1996—Subsec. (a). Pub. L. 104–132, §§ 511(c), 725(1)(A), (B), in heading, inserted “Against a National of the United States or Within the United States” after “Offense”, and in introductory provisions, substituted “, without lawful authority, uses, threatens, or attempts” for “uses, or attempts” and inserted “, including any biological agent, toxin, or vector (as those terms are defined in section 178)” after “mass destruction”. Subsec. (a)(2). Pub. L. 104–132, § 725(1)(C), inserted before semicolon at end “, and the results of such use affect interstate or foreign commerce or, in the case of a threat, attempt, or conspiracy, would have affected interstate or foreign commerce”. Subsec. (b). Pub. L. 104–132, § 725(4), added subsec. (b). Former subsec. (b) redesignated (c). Subsec. (b)(2)(B). Pub. L. 104–132, § 725(2), as amended by Pub. L. 104–294, § 605(m), added subpar. (B) and struck out former subpar. (B) which read as follows: “poison gas;”. Subsec. (c). Pub. L. 104–132, § 725(3), redesignated subsec. (b) as (c).

Reference

Citations & Metadata

Citation

18 U.S.C. § 2332a

Title 18Crimes and Criminal Procedure

Last Updated

Apr 6, 2026

Release point: 119-73