Yeah, he can sue. It'll get tied up in court for a shory while at least, but I don't think that he will have much of a case other than perhaps a pissing match over the dollar amount. Remember that the 5th Amendment requires just compensation, not total compensation, so . . .

If you know a lawyer that would want to take this up, perhaps you should make the match. It does look like they are trying to work it our for the moment with this community meeting, but I don't trust DHS and Nappy to play nice with others in any event.