Family law is state law. The grounds for divorce, how property divides, how custody schedules are set, and how support is calculated all depend on the statute book of the state where the case is filed — sometimes on the county courthouse's local rules. A confident answer that ignores jurisdiction is usually a wrong answer.
These guides explain the frameworks that most states share — no-fault divorce, the best-interests standard, guideline child support — and flag where the differences are big enough to change strategy, with links to official state self-help resources rather than one-size-fits-all claims.