If you are planning to visit a country outside the U.S. which is not your country of citizenship or legal permanent residence, be sure to determine whether or not you will need a visa to enter that country. There are circumstances when your U.S. visa might allow you entry to a third country outside the U.S., but more often than not you might need to obtain a visa directly from that third country's diplomatic mission.
Below you will find information on specific rules that might apply when you are travelling to a neighboring or nearby country to the U.S., as well as Yale resources for global travel.