I know 2 people (Haitian) who did it 2 years ago. They didn’t ask them prove of residency at the embassy. If your husband is still in the DR, I think he can have the interview without the residency but when you’re gonna fill the I-130 or I-130A your need to put in the location where he’s gonna have the interview “Santo Domingo ”. I would recommend you to call and ask them first.
829-956-5144
Now I’m currently waiting for the interview letter in Santo Domingo, my case was assigned to Haiti and I switched it to the Dominican Republic.
The recommendation from this article is to choose the location where one has the strongest social and economic ties. The idea is to avoid giving the impression that one is "consulate shopping".
Does your husband have any kind of residency status in the Dominican Republic? Has he been working there? Those would probably be a factor in the decision.
