Before we appropriated words like "sovereignty", we said "Tewatahtawi": "We carry ourselves."
The trade conducted within our territories and between our territories is the most vital and sustaining commerce we have. Our individual Native-to-Native trade IS Nation-to-Nation trade as it is a transaction from one Native territory to another. An act of aggression by a non-native government, agency or official against an individual conducting a lawful act on Native land or between Native lands is an act of aggression against our Nations. Violating the sovereignty of an individual, violates the sovereignty of us all. Commerce conducted from one Native territory to another Native territory by our people is a sovereign act in our free use and enjoyment of our lands and the right to sustain ourselves without interference, whether that commerce is carried out by individuals or an agency or designee of the people.