Visa & Letter of Invitation

UPDATED: 28 July 2017

Visa & Letter of Invitation

Please consult with the American Consulate in your region AND the official U.S. State Department Visas website ( on whether you need a visa to travel to the United States. We strongly encourage you to *apply now* as visa approval sometimes takes months. 

Planning your itinerary early and confirming whether you may need *transit visas* is also highly recommended. For example, if you have a flight connection in Canada or other countries en route to U.S., you might need to obtain an Electronic Travel Authorization (eTA) or transit visa(s) to complete your journey to the U.S. Please consult with your travel agency and the Consulates of the countries you will transit through.

The Visa Waiver Program (VWP) enables most citizens or nationals of participating countries* to travel to the United States for tourism or business for stays of 90 days or less without first obtaining a visa, when they meet all requirements explained below. Travelers must have a valid Electronic System for Travel Authorization (ESTA) approval prior to travel. If you prefer to have a visa in your passport, you may still apply for a visitor (B) visa.

Invitation Letter

If you need a letter of invitation originated from the United States to support your visa application, please contact Dr. Kathleen C. Weathers (weathersk [at], co-chair of the GLEON 19 Program and Organizing Committees, with a copy to Ms. Lisa Borre (borrel [at]

Please provide information below in your request e-mail: 

  (1) Your full name;
  (2) Title/Position, Organization and address that should appear on the letter;
  (3) Email, phone number and nationality;
  (4) Duration of stay in the United States: arrival & departure dates (if you are extending your stay, please let us know the reason, such as "meet with colleagues at ____ (name of institution)" or "visit friends/family in ___ (city/state));
  (5) Additional information that needs to be evident in the invitation letter as required by the U.S. Consulate (or by your university administration if not for visa purpose);
  (6) If you need an original/physical letter signed and posted to you, please provide complete postal address (zip code included) in your request e-mail.

*The letter of invitation does not financially obligate the hosting organizations. All expenses incurred in relation to your GLEON 19 attendance are the responsibility of the participant. Whether you may be sponsored by your institution, GLEON or another source of travel support, please work with your funding agencies for financial support documentation should it be required for your visa application.

Visa letter and application FAQs

Q: What is the address of the venue where we'll be staying at the GLEON 19 meeting?
A: The address for overnight accommodation from 26 November to 1 December is:

Mohonk Mountain House
1000 Mountain Rest Road
New Paltz, NY 12561
Telephone: (844) 207-8372
For students and postdocs attending the post-meeting Bayesian Statistics Workshop on 2-3 December, the address is:
Cary Institute of Ecosystem Studies
2801 Sharon Turnpike (Route 44) 
Millbrook, N.Y. 12545
Telephone: (845) 677-5343

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