Here is the Ninth Circuit’s opinion in Rincon Band v. Schwarzeneggar (over a dissent).
Only some of the materials are available (since this case is so old, and CA9 only recently joined the 21st century):
[Picayune Amicus Brief unavailable]
California Response to Picayune Amicus Brief
Here are the lower court briefs and materials.
Turtle Talk 
Interesting opinion, interesting dissent.
The dissenter is famous for other reasons:
http://en.wikipedia.org/wiki/Bybee_Memo
But since then he’s written some opinions that manage not to enable war crimes:
http://openjurist.org/434/f3d/1127/smith-v-salish-kootenai-college
http://openjurist.org/394/f3d/1215/united-states-v-bruce