Provides general information about tracing American Indian/Alaska Native ancestry to a federally recognized tribe but does not carry out genealogical research or DNA tests. Each tribe has its own criteria for membership, maintains its own enrollment records and records about past members. Two common requirements for membership are -  Lineal descendancy from someone named on the tribe's base roll or   -  Relationship to a tribal member who descended from someone named on the base roll. (A "base roll" is the original list of members as designated in a tribal constitution or other document specifying enrollment criteria. Other conditions such as tribal blood quantum, tribal residency, or continued contact with the tribe are common. Provides technical assistance to Tribes and Agencies for a variety of issues affecting trust and restricted land and resources.    Provides Tribal Government Services, such as reviewing tribal ordinances and codes to providing advice, technical guidance and direction on tribal constitutions, corporate charters, resolutions, ordinances, law and order codes, official tribal actions, tribal courts and enrollment. Provides Social Services Program services such as Indian Child Welfare (ICWA) and General Assistance reviews. Prepares and submits the record of probate documentation for determination of the legal heirs or devisees. Individual tribes have additional services.