As you know, the requirements for travel to the United States constantly change. The links below can connect you to the latest US Government Visa information. We urge everyone that requires a Visa to travel to the US to apply for the Visa as early as possible. Please read the following information carefully.
Click here for information on Temporary Visas to participate in a meeting or other temporary travel to the United States.
If you require a letter of invitation for your visa application, please submit a request for a letter of invitation.
At least one of the following criteria must be met in order to honor the request for a letter of invitation. The requesting party must either:
Important: All letters of invitation will be sent via regular mail unless you provide a validFederal Express or DHL account number. In most cases, Visa Offices will not accept faxed or e-mailed invitation letters.
Please provide the following information in your request:
To request a letter of invitation:
Click here for a description from U.S Customs and Border Protection of the process for entering the United States.
The National Academy of Science has established an International Visitors Office with travel information specifically designed for scientists traveling to the US.
2017 Platinum Sponsors
2017 Gold Sponsor
2017 Silver Sponsors
2017 Bronze Sponsors
2017 Premier Partners
2017 Supporting Organizations
In partnership with