A rare argument against borders
Imagine you're wanted by the state for tax evasion, draft evasion, or some other bs like that. What will you do?
Maybe fake your death and move to a different place and get a completely new identity?
Without borders, this wouldn't be so hard. Yes, the state will demand identification for some things, but living without identification, undocumented, wouldn't be per se illegal.
But with borders, the state can just call you an "illegal". Either they'll violently kidnap you to some land you've never been to, or you'll give them your former identification, letting them arrest you for the aforementioned tax evasion or something.
Bordertarians, do you really hate foreigners so much that you're willing to support such totalitarianism? "Pragmatism" my ass