N.Y. Indian Law § 9
The chiefs, head men or councilors of any nation, tribe or band of Indians other than the Seneca nation, in council assembled, may, by a majority vote, grant a written permit to any Indian not a member of such nation, tribe or band, to reside upon the tribal lands thereof, and may limit the time and regulate the terms upon which any Indians, not members of such nation, tribe or band, may settle or reside upon such tribal lands. The permit shall describe the boundaries of the land permitted to be occupied, the length of time and the terms upon which such Indian may reside upon such land, and shall be signed by the presiding officer and the secretary or clerk of the council. The council of the Seneca nation may admit an Indian of any other nation, tribe or band, to become an inhabitant of their reservations and to enjoy the same privileges with them. All leases, contracts and agreements, not authorized by this chapter, whereby any Indians not members of such nation, tribe or band, shall be permitted to reside on the tribal lands of such nation, tribe or band shall be void; and the Indians illegally occupying such lands shall be liable to removal as intruders.
N.Y. Indian Law § 9