Conclusion:
No. The Supreme Court reversed the First Circuit holding that the Indian Reorganization Act of 1934 did not apply to tribes not recognized at the time of the statute's creation. Therefore, the Indian Reorganization Act did not authorize the Secretary of the Interior to act on behalf of the Narrangansett Tribe as trustee. With Justice Clarence Thomas writing for the majority and joined by Chief Justice John G. Roberts, Justice Antonin G. Scalia, Justice Anthony M. Kennedy, Justice Stephen G. Breyer, and Justice Samuel A. Alito, the Court reasoned that the statute unambiguously referred only to those tribes that were under federal jurisdiction in 1934, and therefore did not apply to the Narrangansett Tribe.
Justice Breyer wrote a separate concurring opinion qualifying his assent to the majority opinion. In part, he argued that the statute was not "unambiguous", but through contextual analysis, the statute referred only to those tribes under federal jurisdiction in 1934. Justice David H. Souter, joined by Justice Ruth Bader Ginsburg, also wrote separately, concurring in part and dissenting in part. He departed from the majority opinion by arguing that the case should have been remanded for the Narrangansett Tribe to pursue an alternative legal theory. Justice John Paul Stevens dissented arguing that the Narrangansett Tribe was an Indian Tribe under the meaning of the statute, though not specified by name, and therefore the Secretary of the Interior should be allowed to act on its behalf.
