In California, a casino alleged of violating federal labor laws has petitioned the Supreme Court in hopes that they will rule that federal labor laws do not apply on tribal land. Previous cases have resulted in a precedent that makes it easier for casino workers to organize- many feel that NLRB involvement in tribal-owned businesses and casinos is necessary in ensuring that workers’ rights are preserved. According to the AFL-CIO, approximately 600,000 individuals are employed by tribal businesses. However, tribes have expressed that they would like sovereignty, and the ability to govern their businesses without federal oversight.
See "Tribal Nations Push Congress, Justices for Labor Law Sovereignty", Tyrone Richardson & Hassan A. Kanu, Bloomberg Law, February 22, 2019