and what substance is there to open borders, let alone the argument that 'we' (who exactly?) had open borders for most of human history for the past few thousa

and what substance is there to open borders, let alone the argument that 'we' (who exactly?) had open borders for most of human history for the past few thousand years, you risked your life by traveling. if someone went around looking for slaves to sell and you found yourself clamped in iron, your life was over