The US embassy in Barbados has announced new policy on appointments of non-resident third country nationals (including CBI citizens).
A third-country national (TCN) is a citizen, resident, and passport holder of a country other than Antigua and Barbuda, Barbados, Dominica, Grenada, St. Lucia, St. Kitts and Nevis, or Saint Vincent and the Grenadines who applies for a non-immigrant visa.
According to a statement from the embassy..
Routine Appointments for applicants not ordinarily resident in consular district are limited.
If you hold a passport from a country besides Antigua and Barbuda, Barbados, Dominica, Grenada, St. Lucia, St. Kitts and Nevis, or Saint Vincent and the Grenadines, be sure to check the website of the U.S. Embassy in that country for visa information specific to your nationality. If you have no long-term status in our consular district (e.g. you are a visitor and not an immigrant, refugee, student or worker), the best place to apply for a visa is in your home country.
The current wait time for Third Country National applicants is 8 weeks.
U.S. visa law is the same around the world and we give applicants without a long term, established connection to our consular district extra scrutiny.
– US Embassy in Bridgetown, Barbados
The official announcement is published in US embassy website