Visa Information

Visa Overview

The U.S. Department of State issues visas tooltip to foreign nationals tooltip traveling to the United States through its embassies or consulates tooltip. However, you do not need a visa for your business meeting or for vacation if you are a citizen of any of the 39 countries participating in the Visa Waiver Program.

Your reason for travel will determine the type of visa you need to enter the U.S. Some of the most commonly requested visas are:

  • Immigrant visa for permanent residency tooltip
  • Visitor visas for tourism or business
  • Fiancé(e) visa to marry your U.S. citizen fiancé(e), and live, in the U.S.
  • Visas for students
  • Business or professional visas for citizens of Canada and Mexico
  • Transit visa for traveling through the U.S. on your way to visit another country

Invitation Letters

A letter of invitation is provided only after you have completed registration for the conference and paid the conference registration fee. Such a letter may be needed to obtain a visa or permission to attend the meeting. If you require a personal letter of invitation to attend the Conference, contact the conference manager by email at: In your email, provide the following information:

  • Complete name
  • Mailing address
  • Accepted paper number (if applicable)
  • Accepted paper title (if applicable)
  • Any other details that your country of residence requires for your visa application

The Conference cannot contact or intervene with any Embassy or Consulate office on your behalf so please begin your visa application process as soon as you determine that you want to attend IEEE ISCAS 2023. Please provide as much information as possible to avoid delays in receiving your letter. 

You must register for the conference and pay in full before requesting an invitation letter. Once the letter is issued, a refund or registration transfer cannot be granted per IEEE Policy.

We suggest that you leave ample time to apply and obtain your VISA.