Isn’t Rome the base, isn’t that the bubble, the bosom of the church organization?
You seem to be trying to portray him as being in some sort of unpleasant captivity, or serving some punishment, but that doesn’t seem to be the case at all.
He is a free man and retired, he can live most anywhere that he wants to, including here in the United states he isn’t exiled or a captive or a prisoner, forced to live at the heart of the church organization in wonderful Rome.
The guy could have just been let go and forced to support himself like a regular Joe on his pension living next door to regular people, maybe even paying his own gardeners.
The guy is doing just fine and safely living in Rome, is he still a Cardinal? What are his titles?