The IAEJ strongly advises any members travelling to the FEI World Equestrian Games in Tryon, North Carolina from countries outside the USA, Bermuda and Canada to apply and procure a Media Visa for entry to the United States. Please note that representatives of foreign media who will work in their profession as media or journalists while in the United States cannot travel on the Visa Waiver Program or on visitor (B) visas.

See Travel Purposes not permitted on visa waiver program here 

Media (I) visas are for representatives of the foreign media, including members of the press, radio, film, and print industries, traveling temporarily to the United States to work in their profession engaged in informational or educational media activities, essential to the foreign media function. Activities in the United States while on a media (I) visa must be for a media organization having its home office in a foreign country. Activities in the United States must be informational in nature and generally associated with the news gathering process and reporting on current events. See Visas here

How to Apply
There are several steps to apply for a visa. The order of these steps and how you complete them may vary from country to country. Please consult the instructions available on the US Embassy or Consulate website where you will apply.

You must schedule an appointment for your visa interview at the U.S. Embassy or Consulate in the country where you live. Wait times for interview appointments vary by location, season, and visa category, so you should apply for your visa early.

If you have any questions please seek advice from the US Embassy or Consulate in the country where you live.