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. U.S. Visas website for the most accurate information.
If you would like an invitation letter to DAC, please submit your request using the link below.
Invitation Letter Request
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.
United States Visa Policies