"American Indian Law" might be better termed "Federal Law about American Indians." It refers primarily to the body of law dealing with the status of Indian tribes and their relationship to the federal government. This includes, among other things, treaties, statutes, cases, administrative actions, and executive orders.
Tribal law, by contrast, is the internal law that each tribe applies to its own affairs and members. Tribal laws vary greatly, and may range from oral traditions to entire codes.
This guide provides information for researchers in the fields of Indian and Tribal law.