The US pulls Eminent Domain all the time.
10 families on 1,000 acres; how much acreage are these families actually living on?
If the Murderous Muslims weren't murdering each other and ISIS wasn't threatening the US, Israel probably couldn't pull this off.
As it is, if Netanyahu doesn't placate the ever growing Right Wing of Israel with this deal, the next Prime Minister will carpet bomb Gaza.
This isn't exactly eminent domain. That land represents the prospect for a peaceful Israeli future. It was a CURSE to win that land by war. Even Jordan didn't want it after the fact. So they are annexing trust and the only way out of this mess. And the timing stinks.
If I were the Caliph --- I'd provide a strip of Israeli land ON THE Jordan river border for military access and settlements. It would be as isolated to Israel as Gaza is for the future Palestine. Leave EVERYTHING ELSE in the acquired Jordanian land to the PA.. PA would still have some river access and border crossings to Jordan thru the Defense/Settlement zone. Israel would have both East/West defensive perimeters. Given the situation in the neighborhood, having Israel protect your Eastern front is a real estate plus ...
To paraphrase Kenny Rogers -- "You gotta know when to hold em. Know when to fold them. Know when to walk away. Know when to run."
Run with it and get it done before the PA is not available.. If the Caliphate starts to acquire parts of Jordan and Lebanon --- there ain't gonna be another hand to leave the game even.