Libertarians get accused of being utopian idealists by non-libertarians all the time. Isn’t it amusing when libertarians start to use such tactics against their own kind for trying to remain principled?
Of course, I’ve advocated no such thing. I have advocated NOT increasing government intervention in the name of fighting immigration and enforcing political borders. As a means in and of itself, there is nothing unjust about it. As a consequence of it, perhaps more people will enter the territory and become welfare recipients - then you should then address the welfare state itself, the root of that particular problem. But the act of allowing people into the territory in itself, allowing them to buy homes from willing sellers and to take jobs from willing employers, does not necessarily violate justice or property rights in itself. You, on the other hand, have advocated (as a means in and of itself) the continued growth of paramilitary powers and immigration bereaucracy at the expense of private property rights. This is hardly justice.
Using the state as if it were a private property owner of the entire territory is incredibly dangerous and opens up a huge can of worms. The state is not a private property owner. And, of course, you are imposing your own personal preference as to how you would use your private property onto the state, assuming that owners would restrict movement. I view it quite the other way around. I think that the incentives in a free market would make immigration restrictionism mostly self-defeating economically, much in the same way that discrimination is a retarded and self-defeating buisiness model. It is true that the individual has a right to exclude someone from their property, but it is fallacious to use state intervention under the assumption that this is how people will employ their property, and it strikes me as ignorant to think that in a free market this would be particularly conductive in the long-term.
It’s a problem because the state is not private property, and restricting movement violates the private property rights of individual owners who DO want to allow such people onto their property, who DO want to allow them into their homes, who DO want to sell them homes, who DO want to hire them. There is no way around this. You cannot treat the entire territory as the private property of the government without in actual fact restricting the liberty of owners of individual plots of property from freely employing it as they please.