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Visa Information

All international attendees who will need to obtain a visa to enter the United States are encouraged to contact the nearest U.S. Embassy or Consulate and begin the application process as soon as possible. Due to the number of visas being processed and the need to be detailed with the reviews, the process can take as long as 8 weeks. Attendees from these countries should start the application process at least 6 months in advance of the meeting. Click here for information on Travel Grants.

To view additional information:


Official information on the visa application process 
To view visa wait times for specific countries
U.S. Embassies and Consulates worldwide 

VISA Waiver Information

International attendees who are nationals of countries listed in the Visa Waiver Program (VWP) may be able to travel to the United States for 90 days or less without obtaining a visa. 

Find out if you are eligible to participate in the Visa Waiver Program

Please note: All VWP travelers from the 27 eligible countries, regardless of age or type of passport used, must present individual machine-readable passports to enter the United States.

Invitation Letter Requests

To assist international attendees in obtaining a visa, The Protein Society will issue letters of invitation. To obtain a letter of invitation you must first register for the meeting. No letters will be issued without a paid conference registration. To obtain a letter of invitation, please e-mail the following information to symposium@proteinsociety.org:

Your full name and complete address 

Passport number 

Date of birth

Date of arrival and date of departure in the United States

Registration receipt

A letter of invitation will be emailed to you on The Protein Society letterhead within 12 business days of the request.