Conference attendees from outside the United States are urged to begin their visa application early. The waiting time can be long and varies from country to country.
For the most accurate information on obtaining a visa visit http://travel.state.gov/visa/visa_1750.html.
If would like an invitation letter to DAC, please complete the following form.
Invitation letter form
ELECTRONIC SYSTEM FOR TRAVEL AUTHORIZATION (ESTA™)
ESTA is now MANDATORY for Visa Waiver Program (VWP) travelers who are nationals of the Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, the Republic of Korea, and the Slovak Republic. Effective January 12, 2009, all VWP travelers are required to obtain an authorization via ESTA before traveling to the United States. Learn more about ESTA on the DHS Customs and Border Protection (CBP) website.
Frequently asked questions
United States Visa Policies
Disclaimer: Please note that this information is provided in good faith, but regulations may change and the only authoritative sources of information are government websites and consular services.