The Standing Rock Sioux Tribe operates under a constitution approved on April 24, 1959 by the Tribal Council of Standing Rock Sioux Tribe. The Tribal Council consists of a Chairman, Vice-Chairman, a Secretary and fourteen additional Councilmen which are elected by the tribal members. Regular Tribal Council meetings are the first Tuesday, Wednesday, and Thursday of the month. Committee meetings are held the second week of the month. The last Monday of the month is for gaming and other tribal business.