I am a certified first responder in France, but laws and protocol may differ from a country to another.
May I use the techniques I am certified for here in other countries without legal issues? I'm not so much speaking about civil issues, but penal, as I could be considered non-certified outside my country.
I don't think that legal issues would fall under health, even if they are about medical laws. I think we should focus on questions that are physical medical problems. There is a Law Proposal on Area 51, so if that ever goes into beta these questions would fit better their.
I would say they are off topic just because there is so many issues dealing with legal advice in a single country and when you have a site that has a worldwide audience it can quickly lead to issues.