Centralized government is necessary for certain functions of society. That centralized government in a large society should NOT invoke broad controls over its society's members. It should limit itself to certain very specific functions, delegating all other governmental functions to more localized governmental entities which are more able to create and enforce an appropriate environment for those specific members.
Centralized government should provide for common defense, oversee postal service and transportation infrastructure and vehicles, and ensure peaceful co-existence of the regional sub-governmental units. All other governmental functions should be delegated to regionalized governmental units.
In a society as extensive and diverse as the United States, state government should have substantial presence. Interstate commerce and all of its implications should be legislated and controlled. Education guidelines should be set and maintained and enforced. Certain personalized statutes could be enacted and enforced at this level, but any changes in these laws must only take effect 10 years in the future. This lead time is necessary to allow any residents who do not agree to such changes, to explore moving to a state which maintained statutes more in keeping with the beliefs of those individuals. These personalized statutes would include such areas as Gun control, Right-to-life issues, religious issues, welfare issues and similar type issues which currently divide our societies.
County level government could also handle the personalized statutes. As long as the specific statutes did not contradict state or federal laws, specific statutes could be enacted and enforced for the benefit of the county's occupants. Any changes in such laws must only go into effect 7 years after enactment of the statutes.
Town / community level government would also operate in the same way. Any changes in their laws would go into effect 5 years after enactment.
The long-term effect of this type of structure would be a gradual gravitating of people of like attitudes toward each other. A town or county or state that specifically and aggressively emphasizes education would gradually grow from immigrants who share that interest, while individuals and families who don't share such a strong feeling and who do not want to help finance such a substantial and expensive project would emigrate to other areas.
An individual town could publicize an aggressive Zero-Tolerance attitude toward crime. Members of that town would be crystal clear in their understanding that the positive values of personal safety and ethical behavior would have a cost of the loss or limitation of certain personal freedoms. If an individual was paranoid about such an environment, that individual would have 5 or more years to move elsewhere. If people from other areas heard about and fully understood the implications of this town's motives, they would be free to move there. ALL people would be free to move there, but some might not enjoy the environment if they did not generally agree with and support the general premise.
As long as most of such laws were enacted at the most local level, there would soon be an incredible diversity of available environments. Such diversity would likely exist within the metropolitan area of each major city, so an individual could likely maintain a current desirable employment while commuting to that specific environment. If a hundred different communities each enacted laws they felt most appropriate for their present residents, it is likely that most possible combinations of attitudes on important personal subjects would exist. Some towns would be very harsh on crime, some moderate, some very liberal. A diversity of methods for welfare would exist with very generous broad programs in some towns, and very specific, very targeted programs in others.
Modern people are generally very mobile. Most people move every few years. Many live 50 or more miles from where they work. These circumstances support the logistical availability of the whole spectrum of these choices to all people.