New information coming to light is 90% propaganda, 10% truth. If we got rid of all borders and made all insurance companies illegal while saying denying a person care in terms of health would put your organization in prison. It would fix nationalism immediately, drag health costs down, and fix many issues people struggle with. The person who works for their family isn't an issue, the government that doesn't let them is. It doesn't matter where or who they are, they were segregated due to old rules, mainly the British decision to segregate to isolate and isolate and divide to rule. Did wars happen before then, yes. But the way to end all wars isn't through segregation, but rather assimilation throughly so all are accepted without question.
Sorry, end rant