Overview
- Visitors on B‑1/B‑2 must request more time before their I‑94 date, with USCIS advising about 45 days in advance.
- Extensions are sought via Form I‑539 online or by mail, with fees of roughly $420 online or $470 by mail.
- Applicants submit I‑94 and passport copies, a clear explanation of need, proof of funds, and a separate Form I‑539A for each dependent.
- USCIS decides each case individually with no guaranteed extension length, and reasons suggesting permanent residence can lead to denial.
- Some travelers are ineligible, including C, D, K, S, WT and WB entrants or those who violated terms; errors or late filings can harm future admissibility.