Beginning January 12, 2009, The US State Department requires that visitors traveling to the United States from visa waiver countries (i.e. Europe, Japan, Australia, etc.) will have to register online 3 days in advance of travel. For further information about the Electronic System for Travel Authorization (ESTA), as well as link to a list of visa waiver countries, please visit http://travel.state.gov/visa/temp/without/without_1990.html
As part of security procedures, many applications for visas are sent to the State Department for a security review. The Website for the State Department is http://travel.state.gov/visa. You can also visit the "International Visitors Office" Website at http://www.nationalacademies.org/visas.
Travelers are advised to apply for a visa as early as possible.
Please check with your local U.S. consulate or embassy to find out the earliest that you may apply for a visa www.usembassy.gov/. The visa applications process can take as long as 8 weeks, especially for those countries that are on the State Sponsors of Terrorism List. Attendees from these countries should start the application process at least 6 to 8 months in advance of the Congress.
Registration refunds will not be issued after April 8, 2010 for denied visas.
Requests for Letters of Invitation:
For security purposes, letters of invitation can only be sent to individuals registered for the Congress. Please contact the Congress Management Office to request a letter of invitation at email@example.com.