Open Borders: Deport All Troublemakers

My latest offering at Open Borders concludes as follows:
Many critics of immigration base their case against open borders on the differences between groups of human beings. I have attempted to show why this problem is not unique to immigrants, that we are in fact different from other natives, too. Eliminating differences in a community of peaceful people presents prejudicial, empirical, and practical problems that most would find unsettling. Those critics who point to “differences” as a justification for restricting immigration thus have a steep burden of proof assigned to them. Until they meet it, I remain unconvinced.
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