In 1934, the Navajo people rejected the Indian Reorganization Act of 1934, however, the Commissioner of Indian Affairs advocated for development of a constitution by the Navajo Nation. Many of the laws in the Navajo Nation Code derive from the 1937 Constitution drafts such as: 1) The governing body of the Navajo Tribe shall be the Navajo Council; 2) Tribal members shall be 1/4 degree of Navajo blood; 3) to approve the sale, disposition, lease or encumbrance of tribal lands.