More complete information for international visitors is available from the International Faculty and Staff Services Office in UW–Madison's Office of Human Resources.
The Visa Waiver Program (VWP) enables nationals of 36 participating countries to travel to the United States for tourism or business (visitor [B] visa purposes only) for stays of 90 days or less without obtaining a visa. Currently, 36 countries participate in the Visa Waiver Program, as shown below:
| Andorra | Denmark | Hungary | Liechtenstein | New Zealand | Slovenia |
| Australia | Estonia | Iceland | Lithuania | Norway | South Korea |
| Austria | Finland | Ireland | Luxembourg | Portugal | Spain |
| Belgium | France | Italy | Malta | San Marino | Sweden |
| Brunei | Germany | Japan | Monaco | Singapore | Switzerland |
| Czech Republic | Greece | Latvia | the Netherlands | Slovakia | United Kingdom |
If you require a visa, please recognize that the visa application process may take several months. An interview appointment is required for a visa application at all embassies and consulates. The wait time for this appointment varies, but may be as long as three months, with processing taking an additional month or more. The wait time for visa applications is available on the State Department's Website. You should begin this process as soon as you make the decision to attend the conference.
The National Academy of Sciences (NAS) has developed a page on its website to collect detailed information about international scientists experiencing significant visa delays. This could prove useful to scientists still trying to cope with the many changes in protocol brought on by the SEVIS student-tracking system and the enhanced security of the US VISIT program. Visa applications that are delayed by more than 60 days will be reported to the State Department. Please visit the NAS website.