Here is the decision in Navajo Housing Authority v. Johns.
From the court’s syllabus:
In this appeal of the Crownpoint District Court’s denial of NHA’s motion to dismiss on the basis of sovereign immunity, the Court vacates the denial. Noting that the issue of NHA’s immunity has returned time and again to the Court, first on the basis of NHA’s codified plan of operations, subsequently on amendments to both NHA’s plan of operations and the Sovereign Immunity Act, the Court finds that NHA had immunity at all times relevant to this action. In reaching its decision, the Court overrules a quartet of cases concerning NHA’s immunity and reestablishes its 1987 opinion in NHA v. Dana as the controlling case.