Robert Miller has posted “American Indian Constitutions and Their Influence on the United States Constitution” on SSRN.
Here is the abstract:
This paper analyzes modern-day American Indian constitutionalism. It describes the development of written constitutions by Indian nations and primarily focuses on constitutions developed since 1934 under the auspices of the federal Indian Reorganization Act. This paper also briefly examines the evidence that American Indian political philosophies, and traditional tribal governmental structures and ideas, influenced many of the Founding Fathers and the drafting of the United States Constitution.