The newspaper reported that relatives of prominent South Carolina politicians, including the brother of U.S. The Wall Street Journal first reported the existence of an investigation. Actions by the tribe’s vendors outside the confines of the IGRA are not within the scope of the agency’s jurisdiction.’” The Catawba said the NIGC “expressly told us that this was limited ‘to the requirements of the Indian Gaming Regulatory Act, including ensuring that the tribe maintains the sole proprietary interest in its gaming operations.