All nonimmigrants in the U.S. must maintain a valid passport.
Your passport is your way to return to your home country. If your passport expires while in the U.S., you are in violation of your nonimmigrant status, as you would be unable to return home. 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 ISSFS (International Student, Scholar and Faculty Services) 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 passport expiration. Accordingly, please be sure to check any new I-94 card to ensure that a passport expiration date has not shortened your period of admission.