Then in 1966, the Bennet Freeze threw up another significant roadblock to electrification. To force negotiation between the Navajo and Hopi Tribes over a land-ownership dispute, the then commissioner of Indian affairs, Robert Bennet, imposed a development ban on 1.6 million acres of Navajo Nation land claimed by both tribes. The Bennet Freeze prevented development of homes, schools, businesses, roads, and utility infrastructure (water wells excepted). It even disallowed maintenance of structures and infrastructure on contested lands.
The Bennet Freeze was a 40 year development ban that was imposed on Navajo Nation land and forced a negotiation with the Hopi tribe over land ownership dispute.