In the EB-1B, how many internal and external reference letters are required?

The EB-1B is a category intended for professors and researchers who demonstrate international recognition for their academic and scientific contributions. An important aspect in preparing the petition is the inclusion of reference letters, as they help to prove the exceptional qualifications that U.S. immigration requires for this category.

Although there is no ‘magic’ or fixed number established by USCIS, a common practice is to generally submit two internal reference letters – those coming from people affiliated with the petitioning institution – along with three to five external reference letters, written by independent experts outside the institution.

Internal letters usually reinforce the candidate’s importance within their work environment and highlight internal contributions, while external letters are essential to attest to the candidate’s recognition at the national and international level, demonstrating the relevance and impact of their field of expertise.

It is important to remember that the focus should be on the quality and credibility of the letters, not just the quantity. Each letter should contain specific details and concrete examples that demonstrate the candidate’s achievements and influence in their field of study. In this way, the body of evidence tells a robust and consistent story about the candidate’s academic recognition and innovative contributions.

Finally, I always emphasize the importance of following U.S. immigration laws and seeking support from reliable and specialized professionals in the area to guide you in assembling your case. Be cautious of promises of guaranteed results or approaches based solely on marketing campaigns, as the proper path to success involves careful and ethical work.

Victoria Harper

Editor-in-Chief

Meet the author

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.