all the contracts already signed and supplies either bought or ordered? Do the contractors... sue the states, federal government or maybe the states sue the feds to reimburse them for all the billions it could cost??? Have Canadian and US Oil companies already committed to supply future oil and how will that be delivered? Oh, how about it all shipped in the much less safety of trucks on highways...or train tankers. this crap is going to cost some one, some entity a whole lot of money.