All U.S. states except Louisiana have a primary heritage in English law

In nations with a civil law system, legislation, statutes, or codes are the primary sources of law, and courts are required to adhere to these statutes. In common law nations, while courts are also required to follow statutes, they also have the authority to establish new law, known as common law or case law, through their rulings in particular cases. Additionally, they possess the power to declare a statute unconstitutional....