Excerpt: The [Senate Committee on Indian Affairs hearing for a bill that would exempt tribes from the National Labor Relations Act, or NLRA, the Great Depression-era law that covers collective bargaining in the private sector] reveals ongoing tensions between labor and native rights about whether the National Labor Relations Board, or NLRB, the agency that enforces the law, can adjudicate disputes between tribal businesses and their workers. The jurisdiction of the NLRB in Indian Country has been a contentious issue between unions and Indian Nations that extends back to the Indian Gaming Regulatory ACT of 1988.