Here is the Peabody Coal petition: Peabody Coal Cert Petition.
The question presented:
Where the EEOC contends that conduct required by a tribal coal mining lease provision mandated by the Secretary of the Interior violates Title VII of the Civil Rights Act of 1964, which statute expressly bars the EEOC from suing the Secretary to enforce Title VII, does Federal Rule of Civil Procedure 14 permit the coal mining lessee or the tribal lessor to implead the Secretary as a third-party defendant?
And here is the Navajo cert petition: Navajo Nation Cert Petition
The questions presented:
1. May the sovereign immunity of the United States and of a federally recognized Indian tribe, preserved in Title VII of the Civil Rights Act of 1964, be abrogated by application of Rules 14 and 19 of the Federal Rules of Civil Procedure?
2. May a court use Rule 14 to permit or require a party to implead the Secretary of the Interior in a case where the applicable statute does not confer a right of contribution?
Lower court materials here.
And here is Dr. Ray Austin’s fine history of the tribal law in question. And my paper from 7 years ago on Rule 19 and Indian tribes. [Read my paper and you’ll know how this is going to turn out.]