Think of a travel visa like a permission slip.  A visa is issued by the Country you plan to visit and gives you permission be there.  Your visa allows you to enter a country, to remain there for a specific length of time, and to leave at the end of your trip. A passport is issued by your own country. It alone does not give you permission to travel to another country. It pays to do a little homework before you get on the plane.  Some countries, like Singapore, do not require United States passport holders to have a visa. Tourists and those conducting business in Singapore can stay up to 90 days but the Embassy does lay out other entry REQUIREMENTS.

U.S. Passport holders visiting Ireland do not require a visa but may be asked to provide proof that they have sufficient funds to support their stay.  The WEBSITE of the U.S. Bureau of Consular Affairs is a great place to get started if you don’t know the visa requirements of the Country you plan to visit.  Just type in the name of the Country and you will learn not only about visa requirements, but there is a wealth of knowledge on safety, travel, local laws, and more.  ECARD holders enjoy acceptance in 174 Countries and Regions and can easily get local cash without the worry of overpaying at an airport currency exchange.  Be sure you know your visa requirements before you get on the plane for your trip.  And be sure to carry and ECARD when you travel.