This is probably the most succinct sentence I've seen in the media justifying the proposed water export pact among the Great Lakes states and provinces:
"A proposed compact governing the use of Great Lakes water would likely make it too costly for states to divert water out of the basin region because it would require them to both replace the water and to do an improvement to the basin, representatives from two conservation groups said..."
Good reporting. Not sure I agree with the rationale, but it's arguable.
http://www.ashland-wi.com/placed/index.php?
sect_rank=1&story_id=182717