United States v. Dion

1986-06-11
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Headline: Court allows federal wildlife laws to apply on a reservation, rejecting a tribal member’s treaty defense and upholding criminal penalties for killing protected eagles while keeping Interior permit control intact.

Holding: The Court held that Congress, by enacting and amending the Eagle Protection Act, clearly abrogated Yankton Sioux treaty hunting rights, so a tribal member may be prosecuted under the Endangered Species Act for killing bald eagles.

Real World Impact:
  • Allows federal prosecution of tribal members who kill protected eagles on reservations.
  • Leaves the Secretary of the Interior with permit authority for Indian religious eagle use.
  • Removes a treaty-based shield against enforcement of overlapping wildlife protection laws.
Topics: tribal hunting rights, wildlife protection, eagle conservation, federal enforcement

Summary

Background

A Yankton Sioux tribal member, Dwight Dion, Sr., was tried for shooting four bald eagles on the Yankton Reservation and convicted under the Endangered Species Act and for selling eagle parts under the Eagle Protection Act and Migratory Bird Treaty Act. A separate charge for shooting a golden eagle had been dismissed before trial. The Eighth Circuit sitting en banc found that the 1858 treaty gave the Tribe exclusive on-reservation hunting rights and held that those treaty rights protected noncommercial hunting of eagles unless Congress clearly abrogated them.

Reasoning

The Court examined whether Congress plainly intended to override the Tribe’s treaty hunting rights. It reviewed the Eagle Protection Act and its 1962 amendments and legislative history, which extended protection to golden eagles and authorized the Secretary of the Interior to issue permits for Indian religious use. The Court concluded that Congress chose a permit-based regime rather than leaving tribal on-reservation hunting unrestricted, and that this showed a clear congressional intent to abrogate the treaty right to hunt eagles. Because the Eagle Protection Act removed the treaty shield for killing eagles, Dion could not use that treaty right to defeat Endangered Species Act prosecution for the same conduct.

Real world impact

The decision means federal bans on taking protected eagles can apply to tribal members on reservations when Congress has clearly acted to conserve species. It confirms the Secretary’s role in issuing narrow religious permits. The Court did not decide the separate religious-freedom claim or whether separate convictions for taking and selling the same birds are authorized, and it remanded the case for further proceedings consistent with this opinion.

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