Please visit the following U.S. government websites for the latest information concerning travel to the United States.
Visitors from countries that are part of the Visitor Waiver Program may visit the following for information about Electronic System for Travel Authorization (ESTA). You must have this authorization before you travel to the U.S. Apply in advance.
http://travel.state.gov/visa/temp/without/without_1990.html
The U.S. State Department Visa information site offers current information on the various types of visas, eligibility requirements, and visa application forms. If you are applying for a visa, apply three to four months in advance. Registration refunds will not be issued after March 12, 2010 for denied visas.
http://travel.state.gov/visa/visa_1750.html
To determine the earliest that you may apply for a visa, please check with your local U.S. consulate or embassy by visiting
http://travel.state.gov/visa/questions_embassy.html
Requesting an Invitation Letter
For security purposes, letters of invitation may only be sent to individuals who have registered for the meeting. Once your registration is complete, please contact Tanda Jaipean tjaipean@histochemicalsociety to request a personalized letter of invitation.
To assist you with the Visa application process:
- Ask for a letter of invitation to attend at least four (4) months prior to the meeting
- Apply for visa at least three to four months in advance.
- Provide your entire trip itinerary, including travel to any countries other than the United States, at the time of visa application.
- If completion of travel plans is contingent upon early approval of the visa application, specify this at the time of the application.
- Provide proof of scientific status.
- Provide meeting brochure and letter of invitation.
- Provide evidence that you are intending to return to your country of residence. This includes such things as:
- family ties in current country of residence, property ownership, bank account, an employment contract
The National Academies has additional information concerning visas.
http://sites.nationalacademies.org/PGA/biso/visas/PGA_048013
