The Securities and Exchange Commission only has authority over publicly traded corporations.
No Indian Nation in the U.S. is a publicly traded corporation, they don't sell stock, they don't trade their stock on the stock exchanges, therefore, they are not publicly traded corporations and the Securities and Exchange Commission does not get involved in their matters.
No Indian Nation in the U.S. is a publicly traded corporation, they don't sell stock, they don't trade their stock on the stock exchanges, therefore, they are not publicly traded corporations and the Securities and Exchange Commission does not get involved in their matters.