Here is the complaint: Quechan Complaint.
An excerpt:
Plaintiff Quechan Indian Tribe (“Tribe”), in its own capacity and as parens patriae on behalf of its members, seeks a declaratory judgment that the United States of America, acting through the Department of Health and Human Services, Indian Health Service (“IHS“), and the IHS Fort Yuma Service Unit (“United States”) is in breach of its statutory obligation and special trust responsibility to provide the Tribe and its members within the Fort Yuma Indian Reservation (“Reservation”) with health care facilities and services that meet generally accepted, appropriate, and best available standards of care.