The Three Affiliated Tribes of Mandan, Hidatsa and Arikara (MHA) Nation control roughly a third of North Dakota's oil output, up 145% in the past two years. Two MHA reformers, Damon Williams, the tribal attorney, and Mark Fox, the tax director are vying for Tribal leadership. Current leadership is plagued by corruption and lack of services being provided to the Tribe from oil revenue. Both candidates propose tighter environmental regulations, and promise to ensure more money goes directly to projects that improve life for the 12,000 tribal members on the 980,000-acre reservation. However, tighter control on Tribal lands could mean more complications and slower permitting for the oil and gas industry.