This. We already nationally regulate crop rotation to protect against erosion and disease, which can have effects beyond the boundaries of any given farm or own

This. We already nationally regulate crop rotation to protect against erosion and disease, which can have effects beyond the boundaries of any given farm or owner: https://www.ams.usda.gov/grades-standards/crop-rotation-practice-standard https://www.ams.usda.gov/grades-standards/crop-rotation-prac.... It seems reasonable to me that access to an aquifer which also goes beyond the boundaries of any given farm would be a reasonable thing to regulate as well. And it's important for policymakers to have the context that international trade considerations have introduced incentives to the region that may not have been present beforehand - as a result, one should not simply say "we never needed to regulate this before" because there are material changes to the situation.