I recall a story of a very very small band, can't remember if it's in Ontario or Alberta, where they were going through a conundrum and were requesting the Fed's help. Basically, when the band formed as an independent self-governing body a few decades ago, they decided that they would have a Chief who is appointed by a council of elders to serve something like 23 year terms. The Chief has a lot of power, and there was no mechanism for "impeachment". In fact, I think the Chief even had the power to appoint the members of the council of elders; not clear on that part. Anyways, it started off well, but then the Chief slowly started appointing all his friends and family to all the key power positions and they are basically running it like an autocracy. The people wanted him out, but they literally control everything. From what I recall, the Feds basically washed their hands and said "hey, this is the system of government you wanted." Not sure what ever happened in the end, but I don't recall any stories about a Chief's head on a pike, so hopefully they came to an amicable solution.