Damn, what's with the bans? Is it always like this?
Immigration is a pretty tough situation right now, and I don't think it's completely crazy to imagine that a 'higher' communist society would have a different take on immigration and the absurdity of it, compared to a 'lower' one.
For example, workers where I live are being forced out of mining and construction jobs by fly in Chinese workers. Not exactly "immigration" but it's easy for people to get angry at the situation. Would you just tell people that are upset with this that borders shouldn't exist?