If it's marked Enfield, instead of Royal Enfield, it's made in India, and it could be a 1990.
I don't know of any Indian Bullet registries to check those numbers for year.
It might be a fun bike to buy cheap, and own while you are there, which can give you some experience with these bikes.
Then, you could sell it when you move away, and buy one here, so you won't have to deal with the importation regulations and hassles, which are alot.
There are plenty of Bullets here to buy, which are already registered in the US, and you can just buy one and take it home.