There are currently 38 Visa Waiver countries that, as of January 12, 2009, require an approved ESTA Travel Authorization to visit the United States via air or sea. Individuals holding a passport from any of these countries may visit the United States under the Visa Waiver Program under certain conditions. Travelers with a passport from any other country must obtain a B-1 or B-2 Visitor Visa in advance. Note that a travel authorization (ESTA) must be applied for online in advance, while Form I-94W is normally completed while flying or at the U.S. port of entry. See below for more information.
The National Academy of Sciences maintains an International Visitors Office (IVO) which will assist all others who need to apply for a visa in advance of entry but who may be having difficulty doing so
Please note: Recent changes to the visa-waiver program will impact dual nationals of, and recent visitors to, Iran, Iraq, Syria and Sudan
Invitations should only state what issuing group (i.e. us) can verify
If you are being funded by an Institution, it may be necessary to obtain a letter from them verifying how your stay is being funded
Invitations should be sent as early as possible
Invitations should include the following:
Names, dates, location and purpose of meeting;
Name, date of birth and passport number of the attendee;
Information on how transportation and local expenses are to be funded;
Information on the organization sponsoring the meeting and relationships to the attendee; and
Name, title, contact information (phone, fax, email, meeting Website) of person responsible for the meeting, in case the consular officer has further questions.
If Problems Arise
Participants should fill out the IVO Questionnaire. This will collect information on visa-related issues and report urgent visa cases to the State Department.
Participants are eligible to complete the questionnaire if: they are a student, scholar or professional in the sciences AND
They have applied for a non-B1 visa to come to the United States for science-related activities and your application has been undergoing administrative processing for 60 days longer OR
They have applied for a B1 visa to come to the United States for science-related activities and your application has been pending for 30 days or longer
The IVO strongly recommends that applicants contact their consulate or embassy to begin the visa process as early as possible: at least four months prior to the event start date (i.e., in April, 2020 or earlier).
Visa Waiver Program Countries
Delegates are eligible to apply for admission under the Visa Waiver Program (VWP) if they are a citizen or national of one of the Visa Waiver Program countries listed below.
In addition, inbound travelers to the United States from Visa Waiver Program (VWP) countries must comply with the U.S. Department of Homeland Security’s Electronic System for Travel Authorization (ESTA) program. ESTA requires all international travelers from VWP countries to register in an online database. International travelers to the United States must go to the ESTA Web site and fill out an application before entering the country by air or sea.
An official Letter of Invitation to obtain a Visa and authorization to attend the World NCD Congress 2020 will be issued ONLY after a completed Registration Form and full payment have been received. Please contact our registration department at WCND2020-registration at icsevents.com for further information.
Letters of Invitations will not be issued to parties who are not registered and/or paid in full. Should your visa application be denied, and you have given adequate time for processing from your country; a full refund on registration fees will be given.
In the event that a letter of invitation is desired before payment of the registration fee, please note that we cannot issue a proof of payment letter until after payment has been made in full. In our experience, the US visa application process requires proof of payment as proof of intent to participate in the congress for visitors from many countries. Without it, the likelihood of visa approval can be significantly jeopardized.
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