The preferred and strongest route is consular processing at the U.S. Embassy in Buenos Aires:

  1. Identify / Purchase or Establish the Business – Either buy an existing small business or set up a new one.
  2. Transfer and Commit the Investment – Wire funds, sign purchase agreements, place money at risk.
  3. Prepare Full Documentation Package – Business plan, source of funds report, ownership documents, contracts, invoices, leases, permits, projected salary for the investor, etc.
  4. File DS-160 and Submit Package to Buenos Aires Embassy
  5. Attend Consular Interview – Usually available within 2–3 months. Bring all supporting evidence.
  6. Visa Issuance – Upon approval, receive E-2 visa stamp (typically 5 years, multiple entry).

Change of Status alternative (inside the U.S.): Enter as a tourist, file for change of status near the end of the 90-day period. This can grant status for 2 years, but you lose status if you exit the U.S. You would later need to do consular processing abroad to obtain a proper multiple-entry visa.