For O-1 cases, the regulations expressly contemplate consultation with a peer group — specialists in the applicant’s field. Structurally, IAE fits this format: a professional association of experts with a public registry, a collegial Certification Council, and a peer-reviewed scholarly journal.
The applicant’s dossier is reviewed by at least two relevant Association members, and their assessment forms the basis of the letter. The letter explains the criteria the Association uses to evaluate experts — the published Criteria Matrix — and how the applicant’s achievements compare with that benchmark. Recognition by a professional organization can serve as an independent evidentiary factor in categories where standing in the field is relevant.
For precise positioning: IAE is a professional association of experts, not a labor organization; the letter is issued as an advisory opinion of a professional association.