The program allows travel to the United States for tourism or business for up to 90 days without a visa. - The following 27 countries participate in the Visa Waiver Program: Andorra, Australia, Austria, Belgium, Brunei, Denmark, Finland, France, Germany, Iceland, Ireland, Italy, Japan, Liechtenstein, Luxembourg, Monaco, the Netherlands, New Zealand, Norway, Portugal, San Marino, Singapore, Slovenia, Spain, Sweden, Switzerland, and the United Kingdom. - Roughly 15 million Visa Waiver Program travelers visited the United States in 2004. - Travel industry sources say the U.S. economy earns between $10 billion and $15 billion a year from Visa Waiver Program visitors. - The deadlines for including the biometric features and embedded computer chip have been delayed several times because the countries involved could not meet them. U.S. authorities have said these latest deadlines are final.