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What is the purpose of the “Supplement B” (I-918B)?

The Supplement B (I-918B) certifies, via police authority, that the U visa applicant cooperates with criminal investigations, being essential for the process and petition review.

Written by

Victoria Harper

Editor-in-Chief

Updated on August 14, 2025
2 min read
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When talking about the U visa, it is important to understand that this benefit is intended for victims of certain crimes who cooperate with investigations or criminal prosecutions in the United States. This understanding is fundamental so that the case owner can be aware of the requirements and responsibilities involved in the process.

The “Supplement B” (also known as Form I-918B) is an essential document in the U visa application process. Its main purpose is to confirm, through certification by a police authority or other government agency, that the applicant is helping or willing to help in the investigation or prosecution of the crime of which they were a victim.

In other words, it is an official way to attest that the individual”s cooperation is aligned with the interests of public safety and justice, and that their participation is crucial for the advancement of the criminal case in question.

It is important to highlight that this document must be completed and signed by an officer of a law enforcement agency or by a competent authority, a confirmation that strengthens the applicant”s case before immigration authorities.

This collaboration demonstrated by the “Supplement B” reinforces the integrity of the process and is essential for the analysis of the U visa petition, becoming a mandatory step for those who wish to benefit from this type of protection.

It is always advisable to remember that complying with United States immigration laws is essential, and anyone interested in starting this process should seek guidance from qualified professionals and reputable institutions. Beware of miracle promises or marketing campaigns guaranteeing results, as the immigration system is complex and requires strict compliance with each step.

Staying informed and acting within the law is the best path to a safe and proper resolution.

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Victoria Harper

Editor-in-Chief

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Leading journalism and editorial content at Visto n’ Visa, Victoria helps make immigration topics clear, trustworthy, and easy to understand. Her focus is on delivering useful, human, and relevant content for people exploring new paths abroad.

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What is the purpose of the “Supplement B” (I-918B)?

The Supplement B (I-918B) certifies, via police authority, that the U visa applicant cooperates with criminal investigations, being essential for the process and petition review.

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