Apply now for your Visa
Because of the cardinal of acceptance applications and the charge for absolute aegis reviews, the acceptance appliance action can booty several months. It is acerb encouraged travelers to administer for their visas as aboriginal as accessible (at atomic 3 to 4 months afore the acceptance is needed).
Passport Requirements to Access the United States
Register Online for access to the United States
U.S. Department of Accompaniment Acceptance advice home page: http://travel.state.gov/visa
Estimated delay times for annual arrangement and acceptance processing: http://www.travel.state.gov/visa/temp/wait/tempvisitors_wait.php
Do you charge a visa? See advice for acting visitors to the United States: http://www.travel.state.gov/visa/temp/temp_1305.html
U.S. Accompaniment Dept. Acting Visas: http://travel.state.gov/visa/temp/info/info_1304.html
Department of Homeland Security: http://www.dhs.gov/xtrvlsec/crossingborders/
National Academy of Sciences: http://www7.nationalacademies.org/VISAS/Traveling_to_US.html
Letter of Invitation
FOR CONFERENCE CHAIRS, TECHNICAL COMMITTEE MEMBERS, AND AUTHORS: Individuals acute belletrist of allurement to access biking visas charge be listed on a cardboard or in the affairs to accept an allurement letter. If you are listed in the Medical Imaging 2010 program, and are in charge of an Official Allurement Letter from SPIE for acceptance appliance purposes, amuse ample out and accelerate the Allurement Letter Appeal Form.
FOR EXHIBITORS: If you are an adviser acute a letter of allurement from SPIE to access a biking acceptance to participate in the Exhibition, amuse ample out and accelerate the Adviser Allurement Letter Appeal Form.
We acclaim that you defended your biking acceptance afore registering for the appointment as cancellations afterwards the preregistration blow may aftereffect in a abandoning fee.
Visa Background Information
Because of the cardinal of acceptance applications and the charge for absolute aegis reviews, the acceptance appliance action can booty several months. It is acerb encouraged travelers to administer for their visas as aboriginal as accessible (at least 3 to 4 months afore the acceptance is needed).
Contact the aing U.S. admiral or admiral for capacity on acceptance appliance procedures.
Guidelines for Acknowledged Acceptance Applications:
A acknowledged appellant will appear to an annual with:
Even those who accept catholic frequently to the US for business purposes ability appointment difficulties from time to time that ability accept little to do with their continuing as individuals. The attributes of the articles and/or industry in which they accept become complex such as assertive types of US controlled appurtenances (wireless technology, electronics, and such) may accord acceleration to difficulties and/or delays. The political altitude and accepted accompaniment of relations amid the nations may become a factor. In added words, a above-mentioned history of biking to the US is never a agreement of approaching admission.
SPIE does not accept any access with the Accompaniment Department or the Appointment of Homeland Security. If your acceptance is delayed (60 canicule or longer) or denied, amuse acquaintance the admiral area your appliance is actuality processed. Also, amuse acquaintance the National Academy of Sciences International Visitors Appointment and ample out the questionnaire:
The International Visitors appointment consistently letters to the Accompaniment Department (submitted through the Acceptance Questionnaire) about applications which accept been awaiting for best than 60 days.
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