Here is the opinion in County of Amador v. Dept. of Interior. UPDATE: And the unpublished opinion in No Casino in Plymouth v. Zinke.

An excerpt:

This case involves a dispute over a proposed casino in Amador County, California. Plaintiff, the County of Amador (“County”), challenges a 2012 record of decision (“ROD”) issued by the United States Department of the Interior (“Interior”) in which the agency announced its intention to take land into trust for the benefit of the Ione Band of Miwok Indians (“Ione Band” or “Band”). The ROD also allowed the Ione Band to build a casino complex and conduct gaming on the land once it is taken into trust. Reviewing Interior’s decision under the Administrative Procedure Act (“APA”), we conclude that the agency did not err. Accordingly, we affirm the district court’s award of summary judgment to Interior and the Ione Band.

Briefs here.