The real gains come from people moving to where their labor is more valuable — and that’s in high-income countries like the United States. The problem is, we rich Westerners won’t let them come. We consign them to lives of low productivity and the attendant poverty by building walls and saying, “No foreigners allowed.” The kicker? We impoverish ourselves in the process. We impoverish ourselves by keeping markets from working and, therefore, keeping others poor.
https://www.aier.org/article/how-rich-people-create-poverty/