This is a half baked long term idea that will be predicated on the existence of mastery of human genetic engineering, and external human birthing technologies.

Human birth rates is falling in many developed countries. If technologies are developed to grow humans on demands to replace falling birth rates, then there may be a temptation for the state to maintain human populations via growth vats.

The danger is that there will be a temptation for the state to technologically modify vat grown humans to better 'citizens' (e.g. genetic engineering, or implants). After all, its not in the state's interest to invest precious resource on a citizen that may potentially rebel.

Well, just as there is a human rights charter. There should be a 'minimum standard' of cognitive humanity enforced by the UN, possibly even stronger than human rights charter (Dedicated military task force?). It would ensure that any humans that a particular country(or corporation) wants to create, at least are cognitively human. Which means no external or internal mental control via technological or genetic means.

This charter should also apply to AIs of a certain level created by state or corporate entity, if such AIs are to be allowed to be recognized as a person with a passport.

Why this? Well if there is injustice in a state, then it become an unstable equilibrium because of human nature not to accept it. If human nature is modified to accept injustice, then the equilibrium will have been reached. Plus such a state will be a threat to other state, because their citizens are reliably loyal to only their creator. It also brings to question about free will, and if the state is allowed to remove a human's free will from the beginning of it's life.

tl;dr: Global charter for the prevention of new humans created with mental control via genetic or technological means.