He has a poor chance of obtaining legal redress. ABC News writes:
The Tiwa-speaking Sandia Pueblo tribe and all the other casino-owning tribes certainly do not want to give up the extraterritorial advantages they get by exemption from various laws and regulations, so they may be reluctant to submit this kind of case to American courts.
They need to take a hard look at the PR cost to them of not paying off. If the trade association split the cost, it would be trivial. They might want to throw in a few million more to spend on R&D to make sure their slot machines never do this again.
More generally, gaming tribes should be thinking constantly about how to garner good publicity. They get enough bad publicity as it is.
These tribes do give generously to local charities, but their efforts don't affect voters in urban areas or state capitols. In other words, the people who will decide the important policy issues the tribes wish to implement.
Therefore, gaming tribes should be building downtown museums, sponsoring sports teams, developing clothing and food products, starting record labels, financing movies (and comic books), etc....as a few of them are starting to do. In other words, whatever it takes to bring their cultural values and perspective into the mainstream. The way to generate a positive opinion in the popular culture is to participate in the popular culture.