When You Enter the United States
Your passport must always be valid at least six months into the future.
F-1 Visa Stamp
An F-1 visa stamp that U.S. consular officials place in your passport indicates that you are eligible to enter or re-enter the United States as an F-1 student. It does not determine your length of stay in the United States.
If your F-1 visa expires while you are in the United States: It is not necessary to renew your visa as long as you remain in the country and remain in active status. A visa can only be secured at a U.S. embassy or consulate overseas. Canadians do not require a visa.
I-94 Departure Record
The electronic record of your I-94 at the U.S. port of entry, along with a valid Form I-20, permits you to stay temporarily in the United States as an F-1 student.
What “F-1 D/S” Mean?
The immigration official should indicate “F-1 D/S” on your I-94. D/S stands for “duration of status.” It refers to the length of time you are permitted to remain temporarily in the United States to pursue a full course of study.
A New I-94 Each Time you Enter the United States
Each time you enter the United States, you will be issued a new I-94 card with a new admission number. The exception is when you re-enter the country after visits of 30 days or less to Canada, Mexico, and adjacent islands.
Renewing or Replacing your Passport
Lost or stolen? Report a lost or stolen passport to the police. Your home country government may require a police report before issuing a new passport.
Renewing or Replacing your Passport: Contact your country’s consulate in the United States.