“If you enter the US prior to September 15, 2026, or if you are currently in the US on or after September 15th, 2026, your I-94 record will still have D/S (Duration of Status). However, if you enter the US on or after September 15, 2026, you will be readmitted with a fixed AUD (Admit Until Date),” read one of the advisories on a university website.