Definition of Terrorist Activity

Date of Information: 11/13/2026

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The Statutory Definition Controls

INA § 212(a)(3)(B)(iii) defines ‘terrorist activity’ for immigration purposes. The analysis includes unlawfulness under the law of the place where the conduct occurred, or unlawfulness under U.S. or state law if committed here, together with an enumerated type of conduct. Ordinary political descriptions do not replace that legal test.

Begin by identifying the actual event and the asserted legal provision. A report calling an organization ‘terrorist’ may be relevant evidence, but the legal submission should explain how the conduct satisfies—or fails to satisfy—the immigration definition.

Identify the Enumerated Act and Its Conditions

The statute lists hijacking or sabotage of conveyances; specified hostage-taking; violent attacks on internationally protected persons; assassination; specified weapons use with the required intent; and threats, attempts, or conspiracies to carry out the listed acts. The details matter. A description of violence should identify the actor, target, method, purpose, and surrounding circumstances.

The weapons clause contains qualifications concerning the devices, intent to endanger people or substantially damage property, and the personal-monetary-gain limitation in the relevant subclause. Read the exact language before using a shorthand description such as ‘any use of a gun.’

Separate the Event From Organizational Attribution

Two questions may arise: whether an event meets the terrorist-activity definition and whether that activity is attributable to the organization involved in the case. Evidence about an individual member's act should be analyzed together with the governing law on group authorization or conduct.

In Islam v. Secretary, Department of Homeland Security, No. 19-13287 (11th Cir. 2021), the court addressed express or tacit leadership authorization in the Tier III context. That is an organization-attribution issue, not a replacement definition for every individual's conduct. Apply circuit authority and the actual evidence.

Build the Factual and Legal Record

Create an event chart identifying dates, location, conduct, targets, sources, and contested facts. Identify the law supporting the unlawfulness element. Address translations, source reliability, and whether reports describe the same faction and period. Where a source uses a conclusion rather than identifying underlying events, explain the evidentiary limitation.

Test the precise intent requirement that applies to the particular clause. Distinguish a person's direct observations from assumptions drawn from uniforms, rumors, media reports, or later designations. Develop the record on these points before deciding whether an exemption is necessary.

Political Motive Does Not Finish the Legal Analysis

Descriptions such as resistance, civil war, revolution, or liberation do not themselves answer the statutory questions. Analyze the event, unlawfulness, applicable intent, and organizational attribution. Equally, do not substitute an opponent's political label for proof of the statutory elements.

Terrorist Activity and Engaging in It Are Distinct Definitions

The next statutory definition, INA § 212(a)(3)(B)(iv), reaches additional acts such as planning, solicitation, recruitment, and material support. Someone need not have personally carried out an enumerated attack for an ‘engaging’ allegation to arise.

Continue to Engaging in Terrorist Activity and Secretarial Exemptions for the related analyses.

Frequently Asked Questions

1. Does the everyday meaning of terrorism determine inadmissibility?

No. The immigration statute has its own definition, including specific acts and qualifications.

2. Is every violent act by a group member automatically the group's act?

The attribution issue requires its own analysis under the applicable authority and evidence. Identify the individual act and the organizational connection separately.

3. Can support raise TRIG without personal participation in an attack?

Yes. The separate definition of engaging in terrorist activity includes material support and other specified conduct.