Also if alcohol sales were legal on Pine Ridge they could be regulated unlike in Whiteclay. For example they could have it be municipal owned only stores (currently the case in Standing Rock by the way) with a tracking system to limit sales per week per person. Similar to some states with products that include Meth ingredients. Obviously not fool proof 100% but far more successful than just letting unlimited amounts come in from Whiteclay and Rapid City.
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So liberals, and it does not work because of dumbs like you, as you value getting drunk rather than humanity.