![Noah Smith 🐇🇺🇦 on Twitter: "6/And on Bryan Caplan's blog, he envisions that an open-borders America would have vast racialized inequalities like South Africa does, and that this would be OK. https://t.co/Ee7jgqsnUa Noah Smith 🐇🇺🇦 on Twitter: "6/And on Bryan Caplan's blog, he envisions that an open-borders America would have vast racialized inequalities like South Africa does, and that this would be OK. https://t.co/Ee7jgqsnUa](https://pbs.twimg.com/media/EMWDWQVU4AARiqg.jpg)
Noah Smith 🐇🇺🇦 on Twitter: "6/And on Bryan Caplan's blog, he envisions that an open-borders America would have vast racialized inequalities like South Africa does, and that this would be OK. https://t.co/Ee7jgqsnUa
![Open Borders: The Science and Ethics of Immigration: Caplan, Bryan, Weinersmith, Zach: 9781250316967: Amazon.com: Books Open Borders: The Science and Ethics of Immigration: Caplan, Bryan, Weinersmith, Zach: 9781250316967: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/61pFpY4V+UL._AC_UL600_SR600,600_.jpg)
Open Borders: The Science and Ethics of Immigration: Caplan, Bryan, Weinersmith, Zach: 9781250316967: Amazon.com: Books
![Economist Caplan to explore science, ethics of immigration in Oct. 7 guest lecture at MTSU – MTSU News Economist Caplan to explore science, ethics of immigration in Oct. 7 guest lecture at MTSU – MTSU News](https://mtsunews.com/wp-content/uploads/2021/10/Caplan-guest-lecture-promo.jpg)