The Tribal Labor Sovereignty Act, currently under consideration in Congress, would exempt Indian tribes as employers, effectively amending the NLRA. The bill underscores the continuing political tensions between tribal nations and casino employees who wish to unionize. Union supporters are concerned that the bill would threaten tribal casino workers, not all of whom are Native American, with the loss of rights and protections traditionally offered by the National Labor and Relations Board.
See "Labor Rights and Tribal Sovereignty Collide at Indian Casinos", Julian Brave Noisecat, Huffington Post, June 14, 2015