except a country isn't anyone's property, it is a geographical location in which some of the property is owned by private civilians and the other parts are unowned or claimed to be owned by a gang of criminals.

At least some of those parts claimed to be owned by the state (currently called 'public property') are the rightful property of those that the state taxes. So to the extent that the taxed would prefer a given immigrant demographic not to use their property state-imposed immigration restrictions with the same outcome are just - effectively partial restitution by the state towards its subjects.