Portfolio without Minister
I say, leave the position vacant. As far as I'm concerned, Bolton was the last chance for the United Nations. Bolton pressed hard and impressively for the U.N. to develop a little courage, i.e. become relevant again if it ever was. This is no longer possible now.
So if I were President Bush, I'd leave Bolton's job vacant for the next President to decide. Oh, I'd tell the Democrats to give me a list of acceptable candidates, then dismiss them one by one. Or, appoint Harriet Meiers.
But what if we need a Security Council veto? So what? Let them pass whatever they want. If we don't like it, stop all (remaining) funding immediately. Try to tax us or drag an American into a U.N. Court and we'll deport the lot and dynamite the building.
It's an opportunity to end this fairy tale called the U.N. that should be explored.