Here is the order in People v. Caswell.
Lower court materials here.

Application materials:

Join us at MSU Law for Treaty Waters at Risk: Tribal Sovereignty and the Line 5 Challenge in the Great Lakes, a one-day conference on Friday, April 17, 2026, examining the legal and environmental stakes of energy infrastructure in treaty-protected waters.
Featuring a keynote by Whitney Gravelle, MSU Law and ILPC alumna and President of the Bay Mills Indian Community, the program brings together leading voices to discuss treaty rights, co-management, and the ongoing Line 5 conflicts at Bad River and the Straits of Mackinac.
Here is the petition in Sault Ste. Marie Tribe of Chippewa Indians v. Michigan:
Question presented:
Whether a district court has “inherent equitable power” to enter a coercive “decree” restricting an Indian tribe’s treaty rights without its consent and without satisfying this Court’s well-established standards for injunctive relief.
Lower court materials here.
Here is the oral argument audio (Ryan Mills for Sault Tribe).
Briefs:

Details on the consent decree here.
Here are the materials in United States v. Michigan (W.D. Mich.):
My last half-assed effort to keep up with the pleadings is here.
And since there are still potential billable hours, except a robust and wasteful appeal or several and, ultimately, a cert petition or several.

Lots of lawyers making money on what appears to be utterly farcical litigation.
Here are the updated materials in United States v. Michigan (W.D. Mich.):
2074 State Opposition to Motion to Reconsider
2075 GTB Response to Motion to Reconsider
2076 Federal and Tribal Opposition to Sault Motion to Reconsider Stay Order
2077 Sault Tribe Objections to Proposed Consent Decree
Prior post with the details of the consent decree here.
Here are materials in an interlocutory (?) appeal on whether the amici can formally intervene in the case (there is a federal brief, joined by the four tribes who signed onto the consent decree, that is sealed):
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