NIW Petition Letter Sample for Brazilian Professionals: What to Include

The NIW petition letter — sometimes called the cover letter or the endeavor statement — is the document that either wins or loses an I-140 petition under the National Interest Waiver. It is not a summary of your resume. It is a legal argument that walks USCIS through the three prongs of Matter of Dhanasar in a way that leaves no room for doubt.

Brazilian applicants who fail NIW petitions almost always fail in this document, not because their credentials are weak, but because their letter is generic. Here is what a strong NIW petition letter contains, section by section.

What the Letter Is Actually Doing

The petition letter has one job: convince a USCIS officer that you satisfy all three prongs of Dhanasar — substantial merit and national importance of your proposed endeavor, that you are well-positioned to advance it, and that it is in the US interest to waive the labor certification requirement.

The officer reading your petition will not know Brazil's professional licensing system, the difference between a Mestrado and a Lato Sensu, or how the CREA or CRM credentials map to US equivalents. Your letter must explain this context specifically and then build the legal argument on top of it.

Section 1: The Proposed Endeavor Statement

This is the opening section and the most important. It defines what you will do in the US and why it matters nationally.

A weak proposed endeavor statement reads like a job description:

"Dr. Silva proposes to work as a physician providing medical care to patients in the United States."

A strong proposed endeavor statement reads like a policy argument:

"Dr. Silva proposes to practice internal medicine in federally designated Health Professional Shortage Areas in rural Florida, directly addressing a shortage that affects over 2.3 million residents who currently have no primary care physician within 30 miles. Her proposed work aligns with the HRSA's documented need for 1,800 additional primary care physicians in Florida's HPSA-designated regions."

The difference: the strong version ties the individual's work to a documented, quantifiable national need. USCIS can look up HRSA shortage data. The officer can verify that the need is real. That is what national importance requires.

For each field, the endeavor statement should reference a specific national problem:

• Engineers: Bipartisan Infrastructure Law funding priorities, FAA infrastructure backlogs, FHWA bridge condition reports
• Physicians: HRSA HPSA and MUA/P designations, AAMC physician shortage projections
• Financial professionals: FDIC underbanked population reports, FinCEN priorities, SEC enforcement gaps
• Technology: White House Critical and Emerging Technologies list, CISA sector risk assessments
• Aviation: FAA Regional Air Service reports, BTS pilot supply data

Section 2: Qualifications and Evidence of Being Well-Positioned

The second section moves from the problem to you, specifically. It argues that your combination of education, experience, and credentials makes you the right person to address the problem you defined in Section 1.

For a Brazilian professional, this section must explain:

Your Brazilian degree and its US equivalency. If you have a Mestrado from a CAPES-rated program, name the institution, name the program, cite the CAPES Conceito rating, and reference your NACES evaluation. Do not assume the officer knows that a Brazilian Mestrado is equivalent to a US Master's degree — make that explicit.

If you are using the Bachelor's plus five years of progressive experience pathway, this section needs to systematically document the progression. Not just "eight years of experience" but a clear narrative: year one through two at a junior level, year three through five with increasing technical responsibility and management scope, years six through eight in a senior specialist role. Then map each stage to the relevant O*NET SOC code requirements for the position you are seeking.

Licenses and professional certifications. Explain that the CRM is issued by the Conselho Federal de Medicina and is the Brazilian equivalent of a state medical license. That the CREA requires passing a professional exam and is the mandatory registration for engineers practicing in Brazil. Officers who do not know Brazil will otherwise discount these credentials.

Measurable achievements. Published papers with citations, patents, managed budget size, number of people managed, specific projects with documented outcomes, awards from professional bodies. Generic statements like "well-regarded professional" carry no weight. Numbers carry weight.

High salary as evidence. Per Matter of Dhanasar and subsequent USCIS policy, a salary that is significantly higher than the prevailing wage for the field is evidence of exceptional recognition. If you earn BRL 28,000 per month as an engineer in Brazil, quantify that in USD at the time of filing and note where it falls relative to average Brazilian engineering salaries.

Section 3: The Waiver Argument

This section directly addresses why USCIS should waive the requirement for PERM labor certification. There are two primary arguments:

Urgency argument. The national need is too pressing and the PERM process is too slow. PERM takes 18 to 30 months from start to finish in 2026. If the US has a documented shortage of primary care physicians in rural HPSAs, requiring a physician to wait two years for a labor certification before they can begin filling that shortage is contrary to the national interest.

Impracticality argument. This is the standard argument for self-employed professionals, researchers, and entrepreneurs. A researcher whose work benefits the field broadly — not a single employer — cannot practically undergo PERM, because PERM requires an employer to recruit for a specific job. There is no employer to do the recruiting. The same logic applies to founders: you cannot conduct a PERM labor certification for yourself.

For most Brazilians in established employment relationships, the urgency argument is stronger. For those starting companies or working in academic or research settings, impracticality is often easier to demonstrate.

Recommendation Letters

The petition letter typically references exhibits — typically labeled Exhibit A, Exhibit B, etc. — and the recommendation letters are among the most important exhibits.

USCIS has been increasingly critical of boilerplate recommendation letters. Letters that:

• Use language that is clearly copied from a template
• Do not demonstrate that the author knows the petitioner's work personally
• Describe the petitioner's general qualifications without speaking to specific projects or contributions
• Come only from colleagues and not from independent experts

...do not add value and can actually hurt by making the file look assembled rather than genuine.

Strong recommendation letters come from people who:

• Are clearly independent of the petitioner (not the direct employer or a business partner)
• Have academic or professional standing in the field
• Describe specific work by the petitioner that they observed or that they have cited in their own work
• Connect the petitioner's specific contributions to the broader national importance argument

Two strong independent letters are worth more than five generic ones.

Common RFE Triggers for Brazilian Applicants

USCIS issues Requests for Evidence when the initial filing raises questions. For Brazilian NIW petitions, the most common triggers are:

Lato Sensu degree. The petition claims EB-2 Advanced Degree eligibility based on a Lato Sensu specialization or MBA. USCIS issues an RFE asking for evidence that it qualifies as a graduate degree, which it typically does not.

Thin national importance argument. The endeavor is commercially interesting but lacks clear national scope. An RFE will ask for evidence of the broader impact.

Experience letters that do not align. The experience letters in the file use vague language, use titles that do not match the CTPS record, or describe responsibilities that are not at the level required for EB-2 advanced-degree equivalency.

Recommendation letters that appear templated. USCIS will issue an RFE noting that the letters appear to use similar language and requesting original independent evaluations.

Drafting the NIW petition letter requires understanding both US immigration law and the specific documentation that Brazilian professional credentials produce. The Brazil to US EB-2/EB-3 Green Card Guide includes a petition letter framework with field-specific examples for healthcare, engineering, technology, and finance, along with templates for employer experience letters and guidance on structuring the proposed endeavor argument for Brazilian credentials.

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