The Case for Getting Rid of Borders – Completely (2015)
theatlantic.com
theatlantic.com
Yes, it tried to do a bit better than tat. It tried to make a case that restricting people is immoral. But if you didn't already assume that it was, the argument was... rather unconvincing.
It also assumes that no moral case can be made for borders, instead of actually taking such an argument seriously and addressing it.