The Blackfeet Nation is located in Northern Montana at the Canadian border. It has a population of 16,500 people and the tribe was artificially divided by the U.S.-Canadian border. The constitution was enacted in 1934 and amended in 1962, 1978, and 1998.

PREAMBLE: We, the adult members of the Blackfeet Indian Tribe, pursuant to the authority vested in us by Section 16 of the Act of June 18, 1934 (48 Statutes at large, page 986), and amendments thereto, do hereby organize for the common welfare of said tribe and the members thereof, and for such purpose do adopt the following constitution for the government, protection, and common welfare of the said tribe and members thereof...