What is the difference between your visa and status?
Take a moment to review ISSS Immigration Documents webpage on the different immigration documents and their importance.
Your student visa, the stamp in your passport, is different than your F-1 visa status which is defined by your I-20, I-94, and F-1 program of study at CU ¶¶Òõ´«Ã½ÔÚÏß.Ìý
Status, is the legal category under which an international visitor is admitted to the U.S.  Most international students studying at CU ¶¶Òõ´«Ã½ÔÚÏß hold F-1 status with an end date on the I-94 of D/S, which means Duration of Status.
 Your student visa (the stamp in your passport) is allowed to expire while you are in the U.S. as long as you are maintaining your F-1 status by following the F-1 regulations within your I-20 program start and end date. If you travel internationally, you need to have a valid student visa when you request admission to the U.S. at a U.S. port of entry.  Without a valid student visa, you will not be readmitted to the U.S. as a student in F-1 status.
 Read more about the difference between a visa and status on the .Ìý
International Travel
If you plan to travel internationally after the visa stamp in your passport expires, you will need to apply for a new F-1 student visa at a U.S. embassy or consulate abroad in your home country.
- You must be physically present in the jurisdiction of the U.S. consulate or embassy that will be issuing the student visa when you apply for the visa.Ìý
- Citizens of Canada are exempt from the visa requirement.Ìý
Review the following resource for information related to travel and visa renewal: