Washington et al. v. United States et al.

Opinion summary

Etalia.ai summary of the majority opinion

The case involved a dispute over fishing rights between the State of Washington and Native American tribes. The Supreme Court upheld lower court rulings that affirmed treaties from the mid-19th century, which guaranteed certain fishing rights to these tribes. These treaties were interpreted to mean that Native Americans had the right to fish at all usual and accustomed places in common with citizens of Washington, effectively granting them up to half of the harvestable catch. The decision reinforced tribal sovereignty and recognized treaty obligations as supreme law under Article VI of the Constitution, emphasizing that states could not unilaterally abrogate or modify such agreements.