If you're planning to attend ICAR 2025 in Jackson Hole, Wyoming, it's important to understand the U.S. entry requirements for international visitors. Depending on your country of citizenship, you may need to apply for a visa or obtain authorization through the Visa Waiver Program (VWP). For more information and details, please visit Travel.State.Gov.

Citizens of countries participating in the VWP can travel to the U.S. for tourism or business purposes, including attending conferences, for up to 90 days without obtaining a visa. However, you must apply for authorization through the Electronic System for Travel Authorization (ESTA) before your trip.

• Apply for ESTA: Visit the official ESTA website to submit your application. View the ESTA Application.

• Check VWP Eligibility: Ensure your country is part of the VWP and review the requirements.

B-1 Visitor Visa for Conference Attendees

If your country is not part of the VWP, or if you prefer to have a visa, you'll need to apply for a B-1 visa, which covers attendance at scientific, educational, professional, or business conventions and conferences.

B-1 Visa Information: Learn about the application process, required documentation, and fees. It's recommended to apply well in advance, as the process can take several months. B1 Visa Application.

Invitation Letter

To support your visa application, you may request an official invitation letter from the ICAR 2025 organizing committee. This letter will confirm your participation in the conference and can be presented during your visa interview. We are working to secure a formal letter of invitation from the Governor of Wyoming and our local Jackson Hole government. Download the Letter.

Recent Travel Policy Updates

Be aware that as of June 9, 2025, the U.S. has implemented travel restrictions affecting citizens from certain countries. These restrictions may impact visa issuance and entry into the U.S.

• The full ban applies to foreign nationals from 12 countries: Afghanistan, Myanmar, Chad, the Republic of Congo, Equatorial Guinea, Eritrea, Haiti, Iran, Libya, Somalia, Sudan, and Yemen.

• Heightened restrictions apply to people from Burundi, Cuba, Laos, Sierra Leone, Togo, Turkmenistan, and Venezuela.