City of Hugo, et al. v. Nichols, et al., 656 F.3d 1251 (10th Cir. 2011), cert. den., 132 S. Ct. 1744 (U.S. Sup. Ct. 2012)

(plaintiff sued state of Oklahoma for right to sell 200,000 acre-feet of water to city of Irving, Texas; OK law required legislative approval before plaintiff could sell water to out-of-state interests; 10th Circuit dismissed case for lack of federal jurisdiction; U.S. Supreme Court declined to hear case).