Here is the unpublished opinion in Mapp v. Viejas Band Of Kumeyaay Indians (Cal. Ct. App.):

An excerpt:

Mapp’s claims in this case relate to his employment by the Band and its potential termination based on the Band’s provision of a conditional license via its officials. He seeks to allege a violation of Family Code section 5290, which permits assessment of a civil penalty against an “employer” for specified conduct.9 That remedy and any judgment would be expressly against the Band. Mapp’s other damages related to negative employment decisions likewise would effectively obligate the Band, not personally the individuals who were implementing the Band’s gaming license rules and conditions. In short, the Band is the real party in interest, and sovereign immunity extends to the individual defendants.