Begin the visa application process now! We strongly encourage you to apply for your visa early to avoid delays with processing.  Start the process by requesting a letter of invitation using the form below, and reviewing the visa requirements to enter the United States.

This form should be used to request an invitation letter to initiate request for travel visas. Either registration to the conference must be completed and paid in full or you must have an accepted abstracts before a Letter of Invitation will be issued. The Letter of Invitation for visa purposes will ONLY be sent by email to the email address that you provide in the form below. ESA cannot intervene on behalf of an attendee with any Embassy, the U.S. Consulate or other government institutions. We reserve the right to request further information regarding the company or affiliation of the attendee to ensure the validity of requests.