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U.S. VISA Appointment and Processing Information

Electronic System for Travel Authorization (ESTA), introduced in January 2009, requires all international travelers from Visa Waiver Program * (VWP) countries to register in an online database. The online travel authorization is easy to use and available in more than 16 languages. Applications may be submitted at any time prior to travel; however, DHS recommends that applications be submitted no less than 72 hours prior to travel.

To learn more about Non-immigrant Visas to the U.S.A.  please click on the following

link to be redirected:

Inbound travelers to the United States from VWP countries may be denied boarding by the airlines if they haven’t complied with the U.S. Department of Homeland Security’s Electronic System for Travel Authorization program. All nationals or citizens of VWP countries who plan to travel to the United States for temporary business or pleasure under the VWP need to receive an electronic travel authorization prior to boarding a U.S.-bound airplane or cruise ship.

Effective September 8, 2010, all ESTA registration applications or renewals will require a fee payment by credit or debit card. Existing ESTA registrations remain valid through their expiration date. For more information, please visit the ESTA page on the Department of Homeland Security, Customs and Border Protection website.

According to the ESTA website, “VWP travelers who have not received an ESTA approval … may be denied boarding. CBP [U.S. Customs and Border Protection] will handle emergencies on a case-by-case basis.” Airlines risk fines if they allow travelers to board without the proper documentation.

International travelers to the United States can go to the ESTA website to fill out an application before entering the country by air or sea. If approved, the authorization is good for two years and can be renewed. Travelers no longer have to fill out an I-94W form before each trip. U.S. officials say ESTA will speed up the process for travelers, enable customs officials to screen passengers in advance and improve security.

Travelers unable to access a U.S. government website may register through travel agents or airline websites.

The ESTA requirement does not affect U.S. citizens returning from overseas, people from VWP countries traveling on a valid U.S. visa or travelers from non-VWP nations.

*The United States Visa Waiver Program (VWP) countries include Andorra, Australia, Austria, Belgium, Brunei, Chile, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Japan, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Monaco, the Netherlands, New Zealand, Norway, Portugal, San Marino, Singapore, Slovakia, Slovenia, South Korea, Spain, Sweden, Switzerland, Taiwan and the United Kingdom.

Learn more about ESTA.

International attendees of the International Raising C. diff. Awareness Conference & Health Expo often need a letter of invitation from the C Diff Foundation in order to obtain a visa to visit the US.

Because of increased scrutiny of visa applicants, many potential attendees of scientific meetings in the United States have experienced unusual delays in obtaining travel visas.

If you need a letter of invitation from the C Diff Foundation and have not yet requested it, please contact Nancy C Caralla who  will forward the document as soon as possible.  In order to compose and send your letter, the following information will be needed NO LATER THAN June 1, 2019:

  • Name as it appears on photo ID
  • Email address
  • Complete mailing address
  • National Academies International Visitor Office
    The National Academies International Visitor Office has resolved more than 93% of visa processing problems that were brought to their attention. If you have applied for your visa and are having difficulties, please contact The National Academies International Visitors Office and complete a questionnaire to request assistance.  The conference is registered with the National Academies International visitor Office:  “Annual International Raising C. diff. Awareness Conference & Health Expo.”
  • U.S. State Department 
  • TSA Secure Flight Program
    Secure Flight is a behind-the-scenes program that enhances the security of domestic and international commercial air travel through the use of improved watch list matching. Collecting additional passenger data improves the travel experience for all airline passengers, including those who have been misidentified in the past.When passengers travel, they are required to provide the following Secure Flight Passenger Data (SFPD) to the airline:

    • Name (as it appears on government-issued ID the passenger plans to use when traveling)
    • Date of Birth
    • Gender
    • Redress Number (if applicable)