Minor quibble on your use of the term “regulation.” Since this was being discussed in Congress, this would actually be about proposed statute, not regulations. Statutes are laws enacted by legislative bodies. Regulations are promulgated by executive agencies, to provide the details of how statutes should be implemented (they tend to be saner than statutes, because they’re limited by real world constraints; they’re also easier to tweak). Lastly, case law is issued by court cases that are considered to be “binding authority.” All of these are considered to be “sources of law.”
I think of laws in practical terms as machines for managing human conflict. My redux of the various branches of government is as follows:
Legislative branch—manufactures laws
Executive branch—operates laws
Judicial branch—troubleshoots/fixes laws
If I could quadruple plus this comment I would