Their job is to apply the Constitution, and in this case the Constitutional principle is quite clear (so clear that it led to a 9-0 decision). Specifically, th

Their job is to apply the Constitution, and in this case the Constitutional principle is quite clear (so clear that it led to a 9-0 decision). Specifically, the "takings clause" of the Fifth Amendment: "... nor shall private property be taken for public use, without just compensation."