The other states are pushing for separation of the Mississippi and Great Lakes watersheds at Chicago.

WSJ: Great Lakes governors seek agreement on invasives

Unidentified Man: Well, they were on different floors, but it was not at all clear that the separation was as great as it should have been.

NPR: Enron's Last Remaining Firm Under Investigation

Sound barriers, pesticides, fishing, pheromones, barriers of bubbles and complete hydrologic separation of the Mississippi and Great Lakes watersheds are all being considered.

ECONOMIST: The Great Lakes