If your visa is delayed in the US student visa process, you may miss the joining date even after meeting US student visa requirements. In that case, request your university for a later intake or updated I-20 while you track your application from immigration. If the visa is rejected, it is usually linked to US student visa eligibility or interview performance. Common issues arise when students misunderstand F1 vs J1 visa rules or do not prepare well for the student visa interview USA. You can reapply with stronger proof and correct how to apply for US student visa steps. For F1 student visa USA applicants, rejection is not permanent, only a chance to improve documents. Conclusion Delay = reschedule with university. Rejection = reapply after corrections. Always follow US student visa requirements and proper preparation to avoid problems.