What is Visa Waiver Program?
The U.S. Visa Waiver Program was established to enable foreign citizen to visit the United States for short term visits for doing business or for staying as tourists for up to 90 days. At present 35 countries, most of them being European, participate in this program. From April 5, Greece will be added as the 36 country to this program. Australia, Brunei, Japan, New Zealand, Singapore, and South Korea are the only non-European countries participating. Since January 2009 it is required that the participants apply for an online authorization (ESTA) to use this program. http://travel.state.gov/visa/temp/withou… .. Reciprocally, U.S. citizen can travel to these countries for business or as tourists without a visa.