USCIS Policy
November 2025: Preponderance of Evidence in O-1
Real-world insights from recent cases. Learn what worked and how to apply these lessons.
The Legal Standard: Matter of Chawathe and O-1 Petitions
Every O-1 petition filed under 8 CFR 214.2(o) is evaluated under the preponderance of the evidence standard, as articulated by the Administrative Appeals Office in Matter of Chawathe, 25 I&N Dec. 369 (AAO 2010). Understanding and actively applying this standard is essential to building a persuasive petition in November 2025, because the standard defines both what USCIS must find to approve a petition and what the petitioner must do to shift the balance of evidence in their favor.
Preponderance of the evidence means that the petitioner must show that it is more likely than not — that is, greater than 50% probable — that the beneficiary meets the O-1 criteria. This is a meaningfully lower standard than clear and convincing evidence (which requires high probability and little doubt) or beyond a reasonable doubt (the criminal standard). In practical terms, preponderance means that a well-documented petition with credible expert support can succeed even if there are gaps in the evidence, as long as the overall weight of the evidence tips toward the conclusion that the beneficiary qualifies.
The significance of Chawathe for O-1 practitioners is that it explicitly rejects a maximalist evidentiary approach as a prerequisite for approval. The AAO stated that the petitioner need not remove all doubt; the evidence need only show that the claim is more probably true than not. This framing should guide how practitioners structure petition briefs and evidence packages for November 2025 filings: focus on the strongest evidence, provide context that makes the evidence meaningful, and use expert letters to fill interpretive gaps — rather than attempting to submit exhaustive documentation that may obscure the most compelling elements of the case.
Preponderance vs. Clear and Convincing: Practical Implications
The distinction between preponderance of the evidence and clear and convincing evidence is not merely academic — it has direct implications for how O-1 petitions should be constructed and how RFEs should be responded to. Clear and convincing evidence would require near-certainty, essentially demanding documentary proof of each element without room for reasonable inference. Preponderance requires only that the evidence, taken as a whole, makes the petitioner's claims more likely true than not. This means that a petition can succeed even when individual items of evidence are imperfect, disputed, or ambiguous, provided the overall weight of the record supports the conclusion that the beneficiary qualifies under 8 CFR 214.2(o).
In practice, the most important implication is that expert testimony and opinion evidence can carry determinative weight under the preponderance standard. When an expert letter from a recognized authority in the field states that the beneficiary's contributions are of major significance, and when that letter is supported by citation evidence, publication records, and other corroborating documentation, the combined weight of the evidence can satisfy preponderance even without a single piece of indisputably definitive evidence. The expert letter is not merely character testimony — it is substantive evidence that USCIS must weigh under Chawathe.
A critical implication for November 2025 RFE responses is that the petitioner's obligation is not to eliminate all possible doubts but to tip the evidentiary balance. An RFE that challenges the significance of the beneficiary's contributions, or that questions whether the beneficiary's salary truly reflects extraordinary ability, does not require the petitioner to submit irrefutable proof. It requires the petitioner to submit additional evidence and argument that, when added to the existing record, makes the petitioner's position more likely correct than not. Calibrating the response to this standard — rather than responding as if clear and convincing evidence is required — helps practitioners avoid over-responding with unnecessary documentation that does not add meaningful weight.
Structuring a Petition to Meet the Preponderance Standard
A petition brief that actively applies the Chawathe preponderance standard is structured differently from a brief that merely catalogs evidence. The brief should open with a summary of the legal standard, reminding the adjudicator that the question is whether it is more likely than not that the beneficiary qualifies — not whether qualification is beyond doubt. This framing establishes the evaluation framework at the outset and primes the adjudicator to apply the correct standard throughout review.
Each evidentiary criterion should be addressed in a dedicated section that: (1) identifies the criterion from 8 CFR 214.2(o); (2) presents the evidence offered to satisfy that criterion; (3) explains why the evidence satisfies the criterion under the preponderance standard; and (4) anticipates and preemptively addresses the most likely challenges to that evidence. The fourth element — preemptive rebuttal — is one of the most powerful tools available to petition drafters. If you know that an adjudicator might question whether a particular award is sufficiently prestigious, address that question directly in the brief and provide evidence explaining the award's significance before the adjudicator has the opportunity to raise it in an RFE.
The petition brief should also include a totality of the evidence section that synthesizes the evidence across criteria to demonstrate that, even if any individual criterion is borderline, the cumulative record clearly satisfies the preponderance standard. This totality argument is especially important for petitions relying on the three-of-eight criteria framework: if the beneficiary satisfies three or more criteria, the totality section should explain why the combined evidence makes extraordinary ability more likely than not, even if no single criterion is spectacularly documented. Under the Kazarian two-step framework, discussed below, the totality analysis is a required step in the adjudicative process.
The Kazarian Two-Step Framework
The Ninth Circuit's decision in Kazarian v. USCIS, 596 F.3d 1115 (9th Cir. 2010), established a two-step analytical framework for extraordinary ability petitions that has been adopted as USCIS policy through the Policy Manual. Under the Kazarian framework, the first step is to count the number of criteria the beneficiary satisfies — the beneficiary must meet at least three of the eight O-1A criteria at 8 CFR 214.2(o)(3)(ii). If three or more criteria are met, the adjudicator proceeds to the second step: a holistic, final merits determination of whether the totality of the evidence demonstrates sustained national or international acclaim and extraordinary ability.
The two-step framework is significant for November 2025 petitions because it means that satisfying the threshold criteria count does not automatically result in approval — the adjudicator must also conclude, in the final merits determination, that the overall record reflects genuine extraordinary ability. USCIS has used the final merits determination step to deny petitions that technically met three criteria but where the adjudicator concluded that the evidence, viewed holistically, did not demonstrate the level of achievement contemplated by the statute. This is particularly common in petitions relying on weaker or more marginal evidence for the criteria count.
The practical response to the Kazarian framework is to build a petition that is strong at both steps. Meet as many criteria as possible — not just the minimum three — and ensure that the evidence for each criterion is the strongest available, not merely sufficient to clear a technical threshold. The final merits determination is where the preponderance of the evidence standard does its most important work: if the record, viewed in its totality, makes it more likely than not that the beneficiary possesses extraordinary ability, the petition should be approved under Chawathe even if there are gaps in the evidence for individual criteria. Structure the petition brief to guide the adjudicator through this holistic analysis explicitly, connecting the dots across criteria to build a coherent portrait of extraordinary achievement.
Using Expert Letters to Shift the Evidentiary Balance
Expert letters are the primary mechanism by which petitioners can shift the preponderance of evidence in their favor on questions that require specialized knowledge to evaluate. Under Chawathe, USCIS must give weight to credible expert opinion evidence, and a well-crafted expert letter from a recognized authority can tip the evidentiary balance on criteria that might otherwise be marginal. The key is ensuring that the expert letters are genuinely probative — that they contain specific factual analysis rather than conclusory praise — and that the experts themselves are credible and qualified to speak to the specific questions at issue.
For November 2025 petitions, expert letters should address the following elements for each major evidentiary criterion: the expert's own qualifications and basis for opinion; the factual basis for the opinion (specific publications, projects, or achievements of the beneficiary that the expert has reviewed); the expert's substantive evaluation of those specific achievements; field context explaining why those achievements are extraordinary relative to peers; and a direct conclusion that the beneficiary meets the criterion in question. An expert letter that simply states the beneficiary is among the top researchers in the field without citing specific accomplishments and providing field context carries little evidentiary weight under the preponderance standard.
A common mistake is recruiting too many expert letter writers of lower prominence rather than fewer letters from highly credible sources. Ten perfunctory letters from mid-level practitioners carry less evidentiary weight under Chawathe than three detailed, substantive letters from full professors at leading research universities or C-suite executives at major organizations who can speak with specific authority. Quality substantially outweighs quantity in expert letter evidence, and practitioners should invest significant time in briefing expert witnesses to ensure their letters are analytically robust.
AAO Decisions in 2024-2025 and Tech Professionals
Recent AAO non-precedent decisions in 2024 and 2025 have continued to develop the application of the Kazarian framework and the Chawathe preponderance standard specifically for technology professionals, who represent a large share of O-1A petitions. Several themes emerge from recent decisions that practitioners should bear in mind for November 2025 filings. First, the AAO has consistently held that membership in professional organizations like IEEE or ACM does not satisfy the associations-requiring-outstanding-achievement criterion unless the petitioner demonstrates that the specific tier of membership (such as Senior Member or Fellow) requires a competitive evaluation of outstanding achievement by peers.
Second, AAO decisions in 2024-2025 have been skeptical of original contributions evidence that relies primarily on the beneficiary's own description of their work's significance. In several recent cases, the AAO found that the petitioner's self-serving characterization of a product's market impact or a codebase's technical novelty was insufficient under Chawathe without corroboration from independent sources — news coverage, analyst reports, competitor acknowledgment, or expert letters from individuals who were not employed by or affiliated with the petitioner organization. Building independent corroboration into the original contributions evidence is essential for tech professional O-1A petitions in the current adjudicatory environment.
Third, recent AAO decisions have reinforced that high compensation in the tech industry — where salaries are generally elevated across the board due to competitive market dynamics — requires careful contextual argument to satisfy the high salary criterion. Showing that a software engineer earns above the 90th percentile for software developers nationally is persuasive, but the AAO has questioned whether high tech sector salaries reflect extraordinary ability in the field as opposed to general market conditions. The response is to demonstrate that the beneficiary's compensation exceeds not just the BLS percentile but also the internal compensation of their peers at the same company — showing that their employer has made a specific investment premium reflecting recognition of the individual's extraordinary ability, independent of general market-level compensation trends under 8 CFR 214.2(o).