All nonimmigrants in the U.S. must maintain a valid passport. If you hold an expired passport while in the U.S., you are in violation of your status. Passports should be valid for at least six months when applying for admission to the U.S. and when applying for a visa stamp. The ISO recommends that individuals apply to renew their passports at least six months prior to expiration. Please contact your local embassy for information about the passport renewal process.
The period of admission on Form I-94 may be abbreviated due to a passport expiration. Accordingly, please be sure to check any new I-94 card to ensure that an upcoming passport expiration has not shortened your period of admission.