The site has information about obtaining a visa for those traveling to the United States. The site includes links to websites for U.S. embassies and consulates worldwide. The embassy and consulate websites have very helpful information about procedures, timelines, communities served, required documentation, and fees.

International registrants should be particularly aware and careful about visa requirements and should plan travel well in advance. If you need an invitation letter for applying visa at a United States consulate, please send an email titled with “SSTD2017: US Visa Support Letter Application” to registration chair Yao-Yi Chiang at with the following information:

  • Your name as it appears on your passport
  • Date of Birth (DD/MM/YYYY)
  • Your passport/ID Number
  • The name of the conference you wish to attend
  • Registration confirmation number
  • Current postal mailing address
  • Postal Address
  • Phone Number
  • Nationality

If you have any papers accepted for the conference, please provide the title and indicate whether you are the “sole author” or a “co-author”. Please note that visa support letters are issued via email by PDF and the original is mailed to your current postal address. It can take up to 7 BUSINESS days to receive a visa support letter. If you have not received one in that time frame, please send an email to and our registration chair will help to handle the request.