Here is the opinion in John v. Navajo Nation.

An excerpt:

In this case, the Nation has not filed a brief nor otherwise indicated its interest in participating in the appeal. Previously in Navajo Nation v. Morgan, 8 Nav. R. 732 (Nav.Sup.Ct.2005), we addressed a similar situation in which the Nation, as here, did not file a brief. In Morgan, we stressed “to the Office of the Prosecutor and the Attorney General the importance of participation in appeals, as their responsibilities to the Navajo people should mandate them to take an interest in each case before this Court.” Id. at 736. The Court takes judicial notice that underlying the dispute resolution process of the Diné, there is this expectation: Diné t’áá hat’íshįį yéego bik’í hojiz’ahgo doo éi t’óó bijilkáa’da doołeeł, háálá bila‘ashdla‘ii éi yíní bíighago dilzin dóó baahasti’; doo éi t’óó naaki nilįigo bił hwiizh dooł’aałda. If one brings forth a serious allegation, the accuser is expected to participate in the resolution of the accusation because the truth of the allegation must be determined out of respect and protection of the individual.