Iowa Mutual Insurance v. LaPlante

Background

An Iowa insurance company sued members of the Blackfeet Tribe and reservation businesses in federal court, claiming diversity of citizenship and asking a judge to declare it had no duty to defend or pay. Before that federal suit, the injured employee and his wife had sued in the Blackfeet Tribal Court, alleging personal injury and a bad‑faith refusal to settle. The Tribal Court ruled it had jurisdiction and allowed appeal only after a merits decision.

Reasoning

The Court addressed whether a federal judge may hear a diversity case before the tribal court system has had a full chance — including tribal appeals — to decide its own jurisdiction. Relying on its earlier National Farmers Union decision and the federal policy of encouraging tribal self-government, the Court held that federal courts should give tribal courts the first opportunity to evaluate and rule on jurisdiction. It explained that the diversity statute does not show Congress intended to displace tribal authority. The Court reversed the lower courts and remanded for proceedings consistent with this requirement, noting the federal court may later review the tribal ruling.

Real world impact

This ruling means insurance companies and other non‑Indians involved in on‑reservation disputes generally must pursue or await tribal court jurisdictional processes before getting a federal hearing. Tribal appellate review must occur first, though federal relief remains possible afterward. The decision pauses immediate access to federal diversity suits in similar reservation disputes and promotes tribal courts’ role.

Dissents or concurrances

Justice Stevens agreed the federal court had jurisdiction but dissented from the Court’s rule requiring deference on the merits; he thought federal courts need not give tribal courts greater deference than state courts.