Such documents were concocted in clear violation of international law then and now. This requires the informed consent of the people concerned. No state can incorporate another unless a clear majority of the people has expressed consent through fairly conducted democratic processes based on a clear question.
But wait, there's more:
The colonists would go out of business, especially the oligarchs. They would have to work out agreements with all the Indigenous people on whose land they are squatting. Indigenous "liens" on buildings, development, resource extraction and all activities on our land will have to be governed and executed by us. Each Indigenous nation will assert our power over our lands, assets and resources. The colonies of U.S. and Canada will just have to become law abiding. They will have to learn to respect indigenous and international law. This will not bring a catastrophe for the ordinary people living on our land. They just have to come to terms with the reality that they are living within our jurisdiction, that they are visitors on our land and that they are required to follow our law.
The pointlessness of their former reliance on their handpicked "Indian" puppets set up by the colonial Indian Act band councils and federal Indian law tribal councils will become obvious. These sell-outs will have to live amongst their relatives without colonial power and support. Whisky, money and guns will lose their mystical attraction.
So 560-plus tribal governments are "colonial puppets" and "sell-outs"? And all the Indians who voted for them are also "colonial puppets"? Is everyone a "colonial puppet" except Means and his group?
This whole stunt is based on the fantasy that 560-plus Indian tribes will rise up against their duly-elected governments and overthrow them. And that the US government will recognize and accept these revolutions as legitimate. Neither action is ever going to happen.
In fact, I'll bet that not a single tribal government will vote to join Means in abrogating its treaties and declaring its independence. I have $100 that says I'm right and Means is wrong. Anyone care to take the bet?