Title 18Crimes and Criminal ProcedureRelease 119-73

§2331 Definitions

Title 18 › Part PART I— - CRIMES › Chapter CHAPTER 113B— - TERRORISM › § 2331

Last updated Apr 6, 2026|Official source

Summary

Defines key words used in the chapter. "International terrorism" means violent or life‑threatening acts that break U.S. or state criminal laws (or would if done in the U.S.), that seem intended to either scare or force civilians, push a government to change policy by fear or force, or affect government actions by mass destruction, assassination, or kidnapping, and that mainly happen outside the United States or cross national borders. "Domestic terrorism" is the same kind of conduct but that mainly happens inside the United States. Other terms are: "national of the United States" has the meaning given in section 101(a)(22) of the Immigration and Nationality Act; "person" means any individual or group that can hold legal or beneficial property interests; "act of war" means an act during declared war, an armed conflict between nations, or an armed conflict between military forces of any origin; and "military force" does not include anyone labeled a foreign terrorist organization under section 219 of the Immigration and Nationality Act (8 U.S.C. 1189), anyone designated a specially designated global terrorist under section 594.310 of title 31, Code of Federal Regulations by the Secretary of State or the Secretary of the Treasury, or anyone a court has found not to be a "military force."

Full Legal Text

Title 18, §2331

Crimes and Criminal Procedure — Source: USLM XML via OLRC

As used in this chapter—
(1)the term “international terrorism” means activities that—
(A)involve violent acts or acts dangerous to human life that are a violation of the criminal laws of the United States or of any State, or that would be a criminal violation if committed within the jurisdiction of the United States or of any State;
(B)appear to be intended—
(i)to intimidate or coerce a civilian population;
(ii)to influence the policy of a government by intimidation or coercion; or
(iii)to affect the conduct of a government by mass destruction, assassination, or kidnapping; and
(C)occur primarily outside the territorial jurisdiction of the United States, or transcend national boundaries in terms of the means by which they are accomplished, the persons they appear intended to intimidate or coerce, or the locale in which their perpetrators operate or seek asylum;
(2)the term “national of the United States” has the meaning given such term in section 101(a)(22) of the Immigration and Nationality Act;
(3)the term “person” means any individual or entity capable of holding a legal or beneficial interest in property;
(4)the term “act of war” means any act occurring in the course of—
(A)declared war;
(B)armed conflict, whether or not war has been declared, between two or more nations; or
(C)armed conflict between military forces of any origin;
(5)the term “domestic terrorism” means activities that—
(A)involve acts dangerous to human life that are a violation of the criminal laws of the United States or of any State;
(B)appear to be intended—
(i)to intimidate or coerce a civilian population;
(ii)to influence the policy of a government by intimidation or coercion; or
(iii)to affect the conduct of a government by mass destruction, assassination, or kidnapping; and
(C)occur primarily within the territorial jurisdiction of the United States; and
(6)the term “military force” does not include any person that—
(A)has been designated as a—
(i)foreign terrorist organization by the Secretary of State under section 219 of the Immigration and Nationality Act (8 U.S.C. 1189); or
(ii)specially designated global terrorist (as such term is defined in section 594.310 of title 31, Code of Federal Regulations) by the Secretary of State or the Secretary of the Treasury; or
(B)has been determined by the court to not be a “military force”.

Legislative History

Notes & Related Subsidiaries

Editorial Notes

References in Text

section 101(a)(22) of the Immigration and Nationality Act, referred to in par. (2), is classified to section 1101(a)(22) of Title 8, Aliens and Nationality.

Prior Provisions

A prior section 2331 was renumbered 2332 of this title.

Amendments

2018—Par. (6). Pub. L. 115–253 added par. (6). 2001—Par. (1)(B)(iii). Pub. L. 107–56, § 802(a)(1), substituted “by mass destruction, assassination, or kidnapping” for “by assassination or kidnapping”. Par. (5). Pub. L. 107–56, § 802(a)(2)–(4), added par. (5).

Statutory Notes and Related Subsidiaries

Effective Date

of 2018 Amendment Pub. L. 115–253, § 2(b), Oct. 3, 2018, 132 Stat. 3183, provided that: “The

Amendments

made by this section [amending this section] shall apply to any civil action pending on or commenced after the date of the enactment of this Act [Oct. 3, 2018].”

Effective Date

Pub. L. 102–572, title X, § 1003(c), Oct. 29, 1992, 106 Stat. 4524, provided that: “This section [enacting this section and sections 2333 to 2338 of this title, amending former section 2331 of this title, and renumbering former section 2331 of this title as 2332] and the

Amendments

made by this section shall apply to any pending case or any cause of action arising on or after 4 years before the date of enactment of this Act [Oct. 29, 1992].”

Short Title

of 2004 Amendment Pub. L. 108–458, title VI, § 6601, Dec. 17, 2004, 118 Stat. 3761, provided that: “This subtitle [subtitle G (§§ 6601–6604) of title VI of Pub. L. 108–458, enacting section 2339D of this title, amending section 2332b and 2339A to 2339C of this title, and enacting provisions set out as a note under section 2332b of this title] may be cited as the ‘Material Support to Terrorism Prohibition Enhancement Act of 2004’.”

Short Title

of 2002 Amendment Pub. L. 107–197, title I, § 101,
June 25, 2002, 116 Stat. 721, provided that: “This title [enacting section 2332f of this title and provisions set out as notes under section 2332f of this title] may be cited as the ‘Terrorist Bombings Convention Implementation Act of 2002’.” Pub. L. 107–197, title II, § 201,
June 25, 2002, 116 Stat. 724, provided that: “This title [enacting section 2339C of this title and provisions set out as notes under section 2339C of this title] may be cited as the ‘Suppression of the Financing of Terrorism Convention Implementation Act of 2002’.”

Reference

Citations & Metadata

Citation

18 U.S.C. § 2331

Title 18Crimes and Criminal Procedure

Last Updated

Apr 6, 2026

Release point: 119-73