If the any governmental entity in the US was required to pay fair value to the property owner for ANY taking of private property or private property rights...for the common good as it is usually described...it would happen far less and only for more important reasons.
DK
I think this would be fairer (and in line with the tone of the Constitution) but shoot, if you can presume to shut down coal plants, buying up all the ivory to throw it away would be nothing.