Until about the 90's people traveled with the "World Passport". Increasingly western govenments made it harder to use and now dont accept it.
https://worldcitizengov.org/
What's the thoughts?
well organised countries with humanist taxpayer based wellfaresystems are the main target of these "universal" passports
if they would be open for that migration they would collapse internally.
the only way to open up the west for these types of passports is by returning the entire society into violent conflicting family tribes like everywhere else.
but that would also mean that all live with a live expectancy of 5 years on average again, we would pretty much life like animals again