Here's one example of why you need expert advice to not just regurgitate rules, but help find solutions (like what my team and I do all day every day!)
Feds: Marijuana is an illegal drug.
California (and others): We disagree, so we are going to make our own law saying marijuana is okay.
Feds: We really don't care that much... so okay.
California: Voter ID is cruel and suppresses voting... somehow.
City in California: We disagree, so we are going to make our own law saying Voter ID is required.
California: Oh HELL no... How dare you try to use your own democratic process. We are going to write a new law superseding anything you may try to do on this ever again.
This happens on all sorts of different topics, at Federal, State, and local levels. Minimum Wage, Drug Classifications, Rest and Meal Break regulations, responses to things like COVID, etc.
Your best defense is to be prepared to double check EVERYTHING you assume you know. Remember, just because you think something should logically work like X does not mean that you will not get sued over it anyway.
The Big Picture Consulting is available to help if you want/need it.