Below is a high-level overview of the types of evidence typically required for an O-1A visa. All evidence is assessed under the USCIS framework and should clearly demonstrate sustained national or international acclaim in your field.1. Awards: Proof that the award was issued to you, along with evidence showing a stringent selection process, typically with an acceptance rate below 5 percent.2. Critical employment: Employment letters and 4–6 industry reference letters attesting to the leadership or mission-critical roles you held and the impact of your work.3. Press: 4–6 pieces of press coverage that clearly name you and describe your current or past contributions.4. Judging: Proof of a judging invitation, evidence of a selective process to become a judge, and information about other judges to establish the level of expertise and prestige of the event.5. Memberships: Evidence that you were admitted through a selective membership process with an acceptance rate below 5 percent.6. High remuneration: Payslips and locally accepted salary benchmark data to demonstrate above-average compensation.7. Original contributions: An expert opinion letter from your industry, along with 4–6 industry reference letters, as advised by your legal counsel.8. Scholarly articles: Citation counts, information on the journal’s reputation and impact, or, for industry-focused profiles, evidence of keynote or panel speaking engagements and the stature of the events.