Background & Facts
The Chickasaw Nation and Choctaw Nation operated gaming facilities and were required to withhold and pay federal excise taxes on pull-tab and tip-jar games. The tribes argued they were exempt from the gambling excise tax under IGRA's general tax-exemption provision, which stated that IGRA "shall not be interpreted as... a basis for imposing any tax, fee, charge, or other assessment... on any Indian tribe."
The government argued that the excise tax was imposed by the Internal Revenue Code, not IGRA, and therefore IGRA's exemption didn't apply. The tribes invoked the Indian canon of construction — that ambiguities in statutes affecting Indians must be resolved in the tribes' favor.
The Court sided with the government on the merits but issued an important statement about when the Indian canon applies.
The Court's Holding
Justice Breyer, writing for the majority, held that the gambling excise tax applied to the tribes because the two statutes (IGRA and the IRC) could be harmonized — IGRA exempted tribes from taxes imposed under IGRA, while the excise tax was imposed under the IRC. But the Court endorsed the Indian canon of construction as a legitimate interpretive tool.
Key Holding on the Indian Canon:
The Indian canon of construction provides that "statutes are to be construed liberally in favor of the Indians, with ambiguous provisions interpreted to their benefit." When two reasonable interpretations exist and one favors tribes, the pro-tribal interpretation controls. However, the canon cannot "overcome" clear statutory text — it resolves ambiguities, not conflicts with plain meaning.
Key Language
"We have held that 'statutes are to be construed liberally in favor of the Indians, with ambiguous provisions interpreted to their benefit.' This canon is 'rooted in the unique trust relationship between the United States and the Indians.'"
"We apply the Indian canon only when a statute is ambiguous. Where the text is clear, we give it its plain meaning without resort to canons of construction."
How the Indian Canon Supports ATN
The Indian canon of construction is ATN's most versatile interpretive tool — it applies to every ambiguous federal statute, including P.L. 280.
- 1. P.L. 280 ambiguities favor ATN. P.L. 280 is silent on regulatory authority, taxing power, and tribal court jurisdiction. Under the Indian canon (confirmed by Bryan v. Itasca County), those silences are resolved in ATN's favor — no regulatory authority, no taxing power, tribal courts retained.
- 2. Cannabis regulatory ambiguity. Federal cannabis law is deeply ambiguous as applied to tribes. The Indian canon requires those ambiguities to be resolved in favor of ATN's sovereignty and self-governance.
- 3. Apply in every filing. The Indian canon should be invoked in every legal filing where statutory interpretation is at issue. It's not a minor rule — it's a foundational principle of federal Indian law confirmed by the Supreme Court.
- 4. Pairs with Mille Lacs and Herrera. Those cases applied the Indian canon to treaty interpretation; Chickasaw applies it to statutes. Together they cover both treaty and statutory ambiguities.
Related Cases
- Minnesota v. Mille Lacs Band (1999) — Indian canon applied to treaty interpretation
- Herrera v. Wyoming (2019) — Indian canon applied to treaty hunting rights
- Bryan v. Itasca County (1976) — P.L. 280 interpreted narrowly using Indian canon
- McClanahan v. Arizona (1973) — Pro-tribal construction of state tax authority
- OTC v. Sac & Fox Nation (1993) — Tax exemption for members in Indian Country