If there were race, religion, or sexual orientation based equivalents to passports, visas, immigration restrictions, and the like, lots of people would be justifiably up in arms about how wrong they are, but since passports, visas, immigration restrictions, and the like base their discrimination on national origin and national citizenship, people not only don’t oppose them, they insist that they are absolutely necessary and that terrible things would happen if these oppressive and repugnant policies were not enforced.
This suggest to me that most people, deep in their hearts, think of people who are citizens of a nation other than their own as sub-human.
It’s no doubt true that in many cases nation-state based bigotry is based on race and religion based prejudice, but I think that pure nationality bigotry is a sad and very harmful reality. Nation-state bigotry is a moral abomination, the same as racism, religious bigotry, and other such collectivist prejudices, but nation based discrimination is popular nearly universally.
There are folks who claim to oppose nation-state bigotry, but few support the measures that a consistent opposition to nation-state bigotry implies, such as abolishing immigration restrictions, passports requirements, visas and other similar policies that impair freedom based on national origin or citizenship.
It’s a shame.