Coverage
Nine visa types. One platform.
Each guide covers the same ground: who actually qualifies, what evidence satisfies the standard, how the process runs, what the government charges, and the specific patterns that draw a Request for Evidence. Written against the regulations, with the primary sources cited on every page.
Work visas
O-1AHow the O-1A works: the eight regulatory criteria, what evidence actually satisfies them, the petitioner requirement founders miss, USCIS fees, and the RFE triggers that sink otherwise strong petitions.
H-1BHow the H-1B works: the specialty occupation test, the cap registration lottery, the LCA and prevailing wage step, cap-exempt employers, transfers and portability, the full fee stack, and common RFE triggers.
L-1AThe L-1A explained: the one-year-abroad rule, qualifying corporate relationships, function managers, the new-office route and its one-year review, blanket L petitions, fees, and the RFE patterns that hit small U.S. affiliates.
L-1BThe L-1B explained: what specialized knowledge actually means, the 2015 USCIS policy memorandum, off-site placement restrictions, the one-year-abroad rule, five-year maximum, fees, and why L-1B draws more RFEs than any other L category.
TNHow TN status works under USMCA: the Appendix 2 occupation list, the credential match that decides most cases, the port-of-entry route for Canadians versus consular processing for Mexicans, nonimmigrant intent, fees, and refusal patterns.
Employment green cards
EB-1AThe EB-1A self-petition explained: the ten regulatory criteria, the final merits determination that decides most cases, priority dates and retrogression, USCIS fees, and why an approved O-1A does not guarantee an EB-1A.
EB-1CThe EB-1C explained: the one-in-three-years abroad rule, what counts as managerial or executive capacity, the qualifying corporate relationship, why L-1A approval does not carry over, fees, and common RFE triggers.
EB-2 NIWThe EB-2 NIW explained: the advanced degree or exceptional ability threshold, the three Dhanasar prongs, how to frame a proposed endeavor, USCIS fees, priority dates, and the RFE patterns that follow a vague endeavor statement.
Citizenship
N-400The N-400 explained: continuous residence and physical presence rules, the three- and five-year paths, good moral character, the civics and English tests, the interview, the reduced fee, and the issues that need attorney review before you file.
Not sure which one applies to you?
Start with the eligibility screener — it checks your record against the published O-1A, EB-1A, and EB-2 NIW criteria and cites the regulation behind each one. If cost is the question, the USCIS fee calculator totals the government fees for any of these filings.
The short version of how these categories relate: if an employer will sponsor you, H-1B or an L-1 transfer is usually the fastest route, and TN is faster still for Canadians and Mexicans in a listed profession. If you want to control your own case, EB-1A and EB-2 NIW are the self-petition green cards, and O-1A is the temporary visa most people use while building that record.
Every filing is reviewed and signed by a licensed attorney
VisaSherpa is an AI-powered platform, not a law firm. The AI does the drafting and the evidence analysis; an independent, bar-licensed immigration attorney reviews, edits, and signs every petition as your counsel of record.
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