Washington v. United States

Issues: (1) Whether a treaty “right of taking fish, at all usual and accustomed grounds and stations ... in common with all citizens” guaranteed “that the number of fish would always be sufficient to provide a ‘moderate living’ to the tribes”; (2) whether the district court erred in dismissing the state's equitable defenses against the federal government where the federal government signed these treaties in the 1850’s, for decades told the state to design culverts a particular way, and then filed suit in 2001 claiming that the culvert design it provided violates the treaties it signed; and (3) whether the district court’s injunction violates federalism and comity principles by requiring Washington to replace hundreds of culverts, at a cost of several billion dollars, when many of the replacements will have no impact on salmon, and plaintiffs showed no clear connection between culvert replacement and tribal fisheries.

Judgment: Affirmed by an equally divided court in a per curiam opinion on June 11, 2018.