Did you know that the Navajo Nation is a sovereign nation? The Navajo Nation has its own lawmakers, and the Navajo Tribal Code resembles that of the United States government. Canva Canva loading...Like the U.S. government, the Navajo Nation is split into three branches: executive, legislative, and judicial. The legislative branch, known as the Navajo Nation Council, has 24 elected delegates from 110 local chapters. The Treaty of 1868 between the United States and the Navajo Tribe formally recognized the Navajo Nation as a sovereign entity.