Unemployment, social security, insurance, etc. They wanna be autonomous, let them be autonomous.
As for constitutional rights, they won't have the protection of the constitution nor the right to participate in elections outside of the autonomous zone.
Revoke their citizenship. They left to form their own nation, they should get everything that comes with that.
Yes
Forming an autonomous country (which hilariously still requests resources from the US, but I digress) would be a renouncement if one’s citizenship, would it not?