On the one hand it’s an interesting idea and there are already people like myself with dual citizenship between the States and a Native American Tribe. (Not to mention that part of Trump’s birthright shit aims to strip indigenous persons of citizenship.)

On the other hand the US has always been a hybrid between federal and national government systems. Past experience has shown that human rights really can’t differ between states and still have everybody get along. Moving to a paradigm where the Equal Protection Clause all of a sudden has a citizenship sized hole in it seems like a very bad idea especially with the most recent Supreme Court rulings.