There is eminent domain for Kelo or Trump construction BS and there is eminent domain for things that Trump wants that happen to be valid national security concerns. So go ahead and buy the land, maybe import some leftover defenders from Standing Rock. Just bring bail money.
If you read the news you see that most Israel problems are rocket attacks or problems in the Palestinian side of the soup. Wonder why? Oh yeah, they built big freaking walls. Now people of various ethnicities and religions still come and go daily, Arabs in Israel proper live without being harmed, and in many cases well. Difference is Israel has pretty good control on how vehicles and shady characters move around. Of course we still get sob stories about how peace loving Palestinian geologists died in a tunnel, seems Israel just hates rockhounds.