Do you have plans to travel to another country? You must plan ahead and find out if you need an entry visa. Failure to have the appropriate entry visa for entry or for transit to another country will result in denial of entry into that country!
You must check on the requirements for travel to that country before you travel! You can consult directly with the nearest Consulate or Embassy within the U.S. of the country you plan to visit to inquire whether you need a visa to enter or transit through that country.
For general information for international students and scholars about travel and re-entering the U.S., please consult our travel guidance webpage.