Hi @ACC24 I believe your ask was around documents. Other than Birth certificate, Police certificate, Employment letter, Marriage Certificate & 2 Photos - no other documents asked.
As far as interview question goes,
#1 Where do you live in US?
#2 Other than US/Canada, Have you travelled any other country?
#3 Other than TN visa, Did you work on any other visa in the US?
#4 US visa refused or deported from US in the past?
Eventually she said based on my employment, she is approving my visa. Hope this helps!
Only hiccup on the interview day was, the elevator broke so they made everyone to wait outside for about 45 mins and it was terribly cold on that day.
Good luck!