If you think that tribal membership and federal recognition and who can be what to whom and why is confusing in the US, take a look at Canada.  One of our readers sent this link. I think it’s well written and explains what our neighbor is doing.

http://apihtawikosisan.com/2011/12/14/got-status-indian-status-in-canada-sort-of-explained/

Hat tip to Paul for this info