You're missing it. If the original law is overbroad, it makes sense to modify the original law, not pass a second law adding exemptions where it doesn't apply.

You're missing it. If the original law is overbroad, it makes sense to modify the original law, not pass a second law adding exemptions where it doesn't apply. If something as innocuos as letting your kids walk home was "endangerment", there are still other, equally innocuous things that qualify as endangerment but aren't covered by this exception. In other words, if the standard is wrong, change the standard (but keep it uniform), don't add (non-uniform) exceptions for the examples that showed the standard was wrong