If you would like to request an invitation letter from DDW 2018 for your visa application, you must first register for the meeting. Registration will open in January 2018. Once you have registered, you may request your invitation letter online using the links on the registration website.
DDW encourages you to start your visa application process as soon as possible. Because of new U.S. State Department regulations, U.S. embassies and consulates may require a face-to-face interview for most non-immigrant visa applications. You should apply for your visa at least three to four months before the meeting.
To schedule an interview for the visa application process, please contact the nearest U.S. Embassy or Consulate. For more information, please see the U.S. Department of State website.
View Visa Information