The purpose of travel must be valid under a B visa. For example, valid business reasons would include such activities as consulting with business associate, attending a scientific, educational, professional, or business convention or conference, attending short-term training, or negotiating a contract. Tourism reasons include vacation, visiting with friends or relatives, obtaining medical treatment, participation in social events hosted by fraternal, social, or service organizations, participation by amateurs in musical, sports, or similar events or contests, or enrollment in a short recreational course of study, not for credit toward a degree.
Individuals who desire to come to the United States for other reasons, other such as to study for credit, to work, or to take up permanent residence are not eligible for the visa waiver program and require specific visas to enter the country.
Further, individuals who have previously been refused, or found ineligible for, a visa cannot travel the United States under the VWP. Additionally, individuals who have had a U.S. visa before or previously traveled to the United States under VWP or another status, must have complied with the conditions of their previous admissions to the United States. For example, an individual who traveled to the United States on a visa or under VWP and overstayed would now be ineligible for VWP.
Citizens of the following 38 countries are eligible for the visa waiver program:
Andorra, Australia, Austria, Belgium, Brunei, Chile, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Japan, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Monaco, Netherlands, New Zealand, Norway, Portugal, San Marino, Singapore, Slovakia, Slovenia, South Korea, Spain, Sweden, Switzerland, Taiwan, and United Kingdom.