Expert opinion letters that carry weight

Independent analysis of your qualifications, written and signed by recognized authorities in your field — built for USCIS scrutiny.

Fortis Evaluations

RE: Expert Opinion — Senior Software Engineer

To Whom It May Concern,

Dr. A. Mehta

Professor of Computer Science

Ph.D., Carnegie Mellon University

Built for every petition

Our experts write letters for the most common employment-based filings — and the uncommon ones too.

H-1B

Specialty Occupation

Independent proof the role requires a degree in a specific specialty

Specialty occupation letters →

EB-1

Extraordinary Ability

Evidence of sustained acclaim and standing at the top of your field

EB-2 NIW

National Interest Waiver

Why your work has substantial merit and national importance

O-1

Extraordinary Ability

Expert testimony of distinction in sciences, arts, education, business, or athletics

L-1A / L-1B

Intracompany Transferee

Managerial capacity and specialized knowledge, independently affirmed

TN & E-3

Treaty Professionals

Confirmation your role and degree meet treaty professional requirements

Written by experts.
Trusted by adjudicators.

A persuasive opinion letter needs more than credentials — it needs specific analysis from someone qualified to give it.

A recognized authority

Letters are authored by tenured professors and senior industry leaders — the credentials adjudicators expect behind an expert opinion.

Specific to your evidence

Every letter analyzes your degrees, experience, and achievements against the exact standard your petition has to meet — never a template.

Formatted for filing

Signed on official letterhead with the expert's CV attached, structured the way USCIS adjudicators are used to reading.

How it works

From your documents to a signed letter — most cases deliver within days, with rush options available.

  1. 1

    Step 1

    Share your case

    Upload your résumé, degrees, and the role or petition the letter needs to support.

  2. 2

    Step 2

    Meet your expert

    We match you with a professor or industry authority in your exact field of work.

  3. 3

    Step 3

    Review the draft

    You and your attorney review the letter and request changes before it is finalized.

  4. 4

    Step 4

    File with confidence

    Receive the signed letter with the expert CV attached, ready for your petition.

Strengthen your petition
with expert evidence

Get matched with a recognized authority in your field and receive a signed, filing-ready opinion letter.