That doesn't require passports and controlled movements. Wherever you are today, you have to conform to all local laws regardless where you came from yesterday

That doesn't require passports and controlled movements. Wherever you are today, you have to conform to all local laws regardless where you came from yesterday or go to tomorrow. I don't see any honorable excuse not to give anyone the same rights and expect the same responsibilities. Every problem you can state has an infinity of possible solutions, not just that one.