I am suggesting that. I think that perhaps we might want to check for certain types of criminal charges, but we are seeing in real time how that is abused. However, yes, the concept of nations, standing armies, and the whole lot is built on hierarchy, deprivation, and violence, and undemocratic process. We should be working towards a world in which borders are not necessary, or at least, expand that zone maximally up to the teeth of imperialist enemies that would try to take it from us.

Socialists are not coming for your toothbrush. We ask for a world in which people are free to live and work where they please. A world where people are not thrown in cages or separated from their families because they cross an invisible line. We don't need to walk into your personal space to have that, but if we did for some reason, hi, how are you doing? :)

>Are you really suggesting that anybody in the world who wants to walk into the USA should be allowed to?

Maybe block known criminals and bad actors, but otherwise yes. If your argument as to why we should exclude people is based on the idea that it would make standards of living worse for people here, that's a) probably not true and b) only makes sense if you think the wellbeing of the people here is more important the wellbeing of people elsewhere.

>It seems like that nullifies the existence of the nation itself. Why have a border?

Not really, there'd still be a government and a system of laws that apply within the border.

But beyond that, why specifically do you think it would be bad to nullify the existence of a nation?

>Why have a military to protect that border?

In as far as a military is necessary, it is to protect against other militaries, not non-violent civilians entering the country.

1) Practically speaking, that wouldn't happen. 2) Ask yourself how ethnocentrism and nationalism led to that genocidal outcome. Could we have instead invited the native americans to work together in a democratic system? Imagine the possibilities. 3) If you're the minority in the world, what justifies you keeping others down? 4) Why are Central and South Americans leaving their homes? Investigate the brutal CIA coups, military invasions, arms dealing, and drug smuggling the united states has inflicted on this hemisphere since before the Monroe Doctrine. If we stopped destroying whole societies, we might not have to clean up our own messes.

EDIT: Also, our institutions have been shown by recent history to be a complete farce. Maybe new people would rebuild them better without the taint of authoritarianism, hierarchy, and corruption.