All states have their own constitution. Cities and counties have charters. Cities and counties have city councils and county commissioners who make ordinances. Treaties - states, cities, and counties are forbidden to enter into treaties with foreign countries. Rules and regulations.
All states have rules and regulations, made by state administrative agencies.
Cities and counties may also have rules and regulations. States, cities, and counties have a state court system. Intermediate appellate courts. Some judges are elected and some appointed. Interrelationships between federal and state and local.