For researchers

Green cards and visas for researchers

Researchers have four main routes. Here is which one fits, what each needs, and how papers, citations and peer review map to the criteria.

Last checked October 2026 · Sources

EB-1B criteria needed
2 of 6
EB-1B and EB-1A legal fee from
$8,995 flat
EB-2 NIW legal fee from
$7,995 flat
O-1A legal fee from
$6,999 flat

Quick answer

Which green card or visa fits a researcher?

Researchers usually compare EB-1B, EB-1A, EB-2 NIW and O-1A. EB-1B needs a US employer’s offer of a tenured, tenure-track or permanent research job. It also needs 3 years of experience and 2 of 6 criteria (8 CFR 204.5(i)). EB-1A and NIW let you file for yourself. O-1A is a work visa.

  • EB-1B: your employer files. No labor certification is needed.
  • EB-1A: no job offer, but a higher bar of sustained acclaim.
  • EB-2 NIW: advanced degree or exceptional ability, plus the Dhanasar test.
  • O-1A: an employer or agent files. It is not a green card.

Compare routes

EB-1B vs EB-1A vs NIW vs O-1A for researchers

The fit column is practical guidance. A partner-firm attorney confirms what fits your case.

RouteWho filesFit for researchersKey hurdleOur legal fee from
EB-1BYour US employerA university, or a private research group with at least 3 full-time researchers, offers you a permanent jobJob offer, 3 years of teaching or research, 2 of 6 criteria, and international recognition as outstanding$8,995
EB-1AYou, or anyone for youStrong record and you want no employer tieA major award or 3 of 10 criteria, then a review for sustained acclaim$8,995
EB-2 NIWYou, or an employerResearch with national importance, often a postdoc or industry scientistThe 3 prongs of Matter of Dhanasar, 26 I&N Dec. 884 (AAO 2016)$7,995
O-1AUS employer or agentNeed to work soon, or bridge to a green cardA major award or 3 of 8 criteria, plus an advisory opinion$6,999

Sources: 8 CFR 204.5(h), (i) and (k) and 8 CFR 214.2(o). Premium processing (Form I-907) is 15 business days for EB-1A, EB-1B and O-1, and 45 for NIW (USCIS). Government fees are separate. See pricing.

Your evidence

Typical researcher evidence, by criterion

Practical guidance on where research work usually fits. What counts is decided on your documents.

Research achievementCriterion it may supportWhat USCIS looks forRead more
PublicationsScholarly articles (EB-1A, EB-1B, O-1A)You are a listed author. You need not be first author, and citations are not needed for this criterion. EB-1B asks for journals with international circulation.Citations and publications
CitationsOriginal contributions, and the final reviewWork cited at a level that shows major significance. Or a high citation rate or h-index compared with others in your field.Citation record evidence
Peer reviewJudging the work of othersThe journal’s request plus proof you actually completed the reviewFind judging seats
GrantsCritical role, or NIW well positionedPrincipal or named investigator on a merit-based government grant. Being funded alone does not prove major significance.NIW three prongs
AwardsAwards (EB-1B: major prizes for outstanding achievement)National or international recognition. An award open only to one school or employer may have little national recognition.Awards criterion

Sources: USCIS Policy Manual, Vol. 6, Part F, Ch. 2, Ch. 3 and Ch. 5, and Vol. 2, Part M, Ch. 4, all current as of Oct. 2, 2026.

EB-1B basics

What EB-1B requires

EB-1B is for outstanding professors and researchers. It cannot be self-filed.

  1. A qualifying job offer

    A tenured or tenure-track teaching job, or a permanent research job, at a US university. Or a permanent research job at a private employer’s research unit with at least 3 full-time researchers.

  2. 3 years of experience

    Teaching or research in your field. Time during a degree counts only in limited cases.

  3. 2 of 6 criteria

    Awards, memberships, published material about your work, judging, original research contributions, or scholarly articles.

  4. International recognition

    USCIS then weighs all evidence to decide if you are recognized internationally as outstanding.

Temporary, adjunct or limited-duration fellowship jobs are not tenure-track, says the Policy Manual. Postdocs should read EB-1A for postdocs and EB-1B for professors.

FAQ

Questions people ask

Only with a qualifying permanent job offer. The Policy Manual says temporary or limited-duration fellowships are not tenure-track. Many postdocs look at EB-1A or NIW instead.

Yes, through EB-1A or EB-2 NIW. EB-1B always needs a US employer to file.

There is no set number. USCIS compares your citations with others in your field. The Policy Manual says citations matter less early in a career.

It can. You need the journal’s request and proof you actually completed the review.

It is possible. The private employer’s research unit must employ at least 3 people full-time in research. It must also have documented accomplishments in an academic field.

Some researchers file more than one petition. A partner-firm attorney decides what fits. See filing two petitions.

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