[engineer_22]

The greater corpus of American law is based on case law, meaning it is based on court decisions. It is a common law system.

This is in juxtaposition to civil law systems that are based on codified legislation, for example in France or Germany.

[MichaelZuo]

Most case law is based on some kind of legislative output directly or indirectly via other case law. That's well known.

[engineer_22]

Yes I agree with you and in the context of this discussion it's unknown the parent's understanding of law and pseudo-law and I apologize if I came across the wrong way as a poser