Plan Ahead

An application for a visa can be a lengthy process, so we recommend starting your visa application process early: 90 to 120 days prior to the conference. SC22 happens November 13–18 in Dallas, Texas.

Visa Letter Instructions

International visitors should give special attention to visa requirements and make travel plans well in advance. To streamline the visa letter process you must follow these steps:


Register for SC and pay in full.


Return to the Registration section of the website and sign in using your registration ID and the email address you used to register.


Click on “Print a Visa Letter of Invitation” to print your letter.

If you have any questions regarding visa letters, please contact SC Registration.

How to Apply for a U.S. Visa

To enter the United States, citizens and residents of most countries in the world must have a visa. If your travel to the U.S. will require a visa, you must apply for it long before you fly to the United States. The application is online and there is a fee. In addition, you must meet with a person at the nearest U.S. Consul General office, who will ask to see a letter that invites you to attend SC.

For reference, here’s a guide with links to important official information: U.S. Electronic System for Travel Authorization.

The Visa Waiver Program

Travelers from some countries can enter the United States without a visa. But entry is not automatic. Before you depart for the United States, you must complete an online application and pay a fee (credit card payment only).

More information: U.S. Department of State Visa Waiver Program.

Electronics & Devices

Bring the right adaptor. In the U.S., the standard power supply voltage is 120V and the standard frequency is 60Hz. Power plugs and sockets accept a multi-way/multi-point outlet plug, known as types A and B. (Plug type A has two flat parallel pins and plug type B has two flat parallel pins and a grounding pin.)

Most electronic devices have universal power supplies that will work in any country, but be sure to check the label on your device. We recommend you bring a power plug (travel) adaptor. You’ll find information about electric adaptors here.


The United States is not a dangerous place. Overall, it is a safe, welcoming country. Dallas is a safe city, but all cities have “good” and “bad” areas. Always be aware of your surroundings and use your common sense when traveling abroad.

Learn more about our host city, Dallas.


SC Pro Tip


If you need a COVID-19 PCR test in order to return to your country of origin there are many options available in downtown Dallas and at nearby airports.

Search Google for PCR testing:

Perform the Search

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