Expert Opinion Letter for an RFE
                     How to Write an Effective Expert Opinion Letter for an RFE
Response
When you receive a Request for Evidence (RFE) — such as for an immigration petition or visa application — an
expert opinion letter can be a powerful tool to respond. If done right, it adds credibility, clarity, and authoritative
support to your case. 
Here’s a step-by-step guide to crafting such a letter:
1. Select the Right Expert
The expert must be truly qualified: ideally someone with advanced degrees, relevant work or research
experience, publications or recognized standing in the field. 
The expert should be independent — no conflict of interest — to ensure their opinion is unbiased and
trustworthy. 
It’s useful to begin the letter with a summary of the expert’s credentials. Attaching a copy of their CV or
résumé can further add weight. 
2. Use a Clear, Logical Structure
A well-organized letter is easier to follow and more persuasive. A recommended structure:
Introduction — Who the expert is and why they are qualified. 
Statement of Purpose — Clearly state this letter is responding to the RFE and specify what issues or
questions from the RFE will be addressed. 
Detailed Analysis — Addresse ach concern raised in the RFE. Use evidence: facts, industry standards,
comparisons, examples, data, or case studies — whatever substantiates the applicant’s credentials or
claims.
Conclusion — Summarize the expert’s findings and clearly state why the applicant meets the
requirements. This should be a firm, confident, and unambiguous statement. 
3. Directly Address Each Issue from the RFE
RFEs usually list specific doubts or points of clarification — for example, whether a foreign degree is equivalent
to a U.S. degree, whether a job role qualifies as “specialized”, or whether a research contribution meets
“extraordinary ability” standards. 
The expert’s letter should mirror the exact wording or refer clearly to each concern — so it’s obvious the
letter responds directly to what’s being asked. 
Provide supporting examples: e.g., similar job roles in the industry, accepted standards, publications or
achievements equivalent to those expected by the reviewing authority. 
4. Back Up Opinions With Evidence and Data
Assertions like “the applicant is an expert” or “this degree is equivalent” are not enough on their own. The letter
must include concrete, verifiable evidence: job descriptions, industry standards, prior work, output (e.g.,
projects, publications, innovations), data, or case studies. 
If possible, cite external sources — published articles, recognized benchmarks, or industry norms — to
reinforce the expert’s statements. 
5. Maintain a Professional, Objective Tone
The letter should read like a neutral, fact-based evaluation — not a glowing personal endorsement. Avoid
vague praise like “very good candidate” without context or measurable examples. 
Avoid overly technical jargon unless absolutely necessary — if technical terms are used, they should be
explained clearly so reviewers (who might not be experts) can understand them.
6. Include a Statement of Veracity
At the end, the expert should affirm that the contents are true to their knowledge — e.g., “I declare under
penalty of perjury …” or otherwise confirm the authenticity and honesty of their opinion. 
Also include full contact information, official letterhead (if available), signature (digital or handwritten), and date
— so the letter appears professional and verifiable. 
7. Attach Supporting Documents
Any documents referenced — CV/resume of the expert, copies of degree certificates, transcripts (if evaluating
academic equivalence), evidence of projects/publications — should be included along with the letter. This gives
reviewers the means to verify the expert’s claims. 
If the RFE questions foreign credentials, include translations where necessary and provide context or
comparison to U.S. standards. 
8. Proofread — Check for Clarity, Accuracy, Consistency
Even minor typos, grammatical errors, mismatched dates or job titles can undermine the letter’s credibility.
Proofread carefully — or better, have someone else review it. Consistency is critical: make sure that job titles,
dates, achievements match the applicant’s submitted resume or other documents. 
Also make sure the structure is clear: headings or bullet points can make it easier for reviewers to follow. Avoid
dense, long paragraphs. 
Why Expert Opinion Letters Matter in RFE Responses
They bring credibility and authority: when written by a qualified independent expert, these letters carry
weight and help establish that the applicant truly meets the required standards. 
They help bridge gaps in documentation or equivalency: especially when degrees are from non-U.S.
institutions or job roles are non-standard, the expert can explain equivalence, clarify specialized duties, or
interpret foreign credentials in a way U.S. authorities understand.
They enable a targeted response: instead of submitting generic or extra documents, a focused expert
letter addresses issues raised in the RFE directly — often more efficiently than trying to guess additional
evidence that will satisfy the reviewing authority. 
In some visa categories (like EB-2 NIW or H-1B), expert opinion letters are frequently pivotal in proving
specialized knowledge, equivalency, or “national interest.” 
Common Mistakes to Avoid
Based on both the article and other expert advice: 
Using vague, generic, or overly flattering statements without concrete examples or evidence.
Submitting a “template” letter — i.e., not customizing the letter to reflect the applicant’s actual background
or the specific issues raised in the RFE.
Ignoring formatting, structure, and readability: long dense paragraphs, inconsistent details, or lack of
clarity reduce effectiveness.
Omitting verifiable supporting documents, or failing to clearly link claims to evidence.
Forgetting signature/letterhead/contact info or omitting a statement of veracity.
Using overly technical jargon that may not make sense to reviewers unfamiliar with the field — failing to
explain complex terms.
Final Thoughts
An expert opinion letter isn’t just a “nice-to-have” — for many cases, it can be the difference between
approval and denial. When crafted carefully — with a qualified expert, logical structure, specific evidence, and
concise clarity — it becomes a compelling narrative that helps reviewers understand why the applicant
deserves approval.
If you are facing an RFE and thinking about getting such a letter, use this as a checklist: choose the right expert,
get supporting evidence ready, respond point-by-point to the RFE issues, and make the letter clean,
professional, and persuasive.