Most travelers to the United States must hold a valid visa and a passport valid for at least six months longer than the intended visit. If you do need a visa, please understand 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. As soon as you decide to attend the meeting, please contact the nearest US Embassy or Consulate and begin the application process as soon as possible.
For official information on the visa application process, visit http://travel.state.gov/content/visas/english.html
Visa wait times for specific countries may be found at http://travel.state.gov/content/visas/english/general/wait-times.html/
A listing of US Embassies and Consulates worldwide may be found at http://usembassy.state.gov
For a step by step guide to the visa application process, click here
Registration refunds will not be issued after May 4, 2017 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