Ask a lawyer that question. At some point if you bring suit and its a FEDERAL government car you might be able to go down to the Federal Courthouse where you live. Otherwise it's more than likely Tennessee that will try the case if there is one brought to bar.
My first accident was with a ATF government car. In NYC of all places.
As far as I knew Uncle Sam and my Company took care of the sum of money in damage by cash and that was the end of that story.