For those yet to go to the US Embassy for a visa interview, I had mine yesterday and it went smoothly and I was granted the visa without any issues, and I assume it should be the same for all, as it’s a university field trip.
I was there for about 2 hours, and the visa will be issued in around 7 days.
The documents I was asked for were:
– Application forms confirmation page (this should be issued once you submit your Ds160 and book your appointment online)
– The University letter regarding the intention of the trip
– Any proof of your commitments to the UK and that you intent to return ( in my case the UK residency visa was enough).
Once you submit your application there is a list of additional documents you should take with you, that you feel will support your application.