Here is the brief:
This brief is submitted in response to the Court’s order inviting the Solicitor General to express the views of the United States. After the petition for a writ of certiorari was filed, amendments to tribal law were proposed that could substantially affect the basis for the decision of the Supreme Court of Alabama in this case. In the view of the United States, if those changes are enacted, the petition should be granted, the judgment vacated, and the case remanded for further proceedings.
Cert stage materials are here.