To throw my two cents in...
I'm seeing a lot of regulation regarding substitute care providers, be they licensed foster parents or approved relative placements. And it seems readily apparent to me that it is all being adopted to avoid litigation. Here in Ohio, a foster parent cannot permit the child to participate in sports, to participate in an activity like Scouting, etc. And, more often than not, the placing agency will not authorize such activities either. Why? Fear that the biological parents will sue. Timmy gets a couple of stitches because of a sports injury, and the parents will sue everyone from the foster mom who drove the boy to the game to the director of the placing agency for millions of dollars. Instead of having a spine and fighting lawsuits like this, the bureaucrats in charge simply deny the kid the opportunity to play. And, I bet that same fear is at the heart of this regulation. Afraid that Sue will tell mommy that foster mommy packs, and mommy and her tile crawler will sue everyone for infliction of emotional distress, negligence, etc. It's crap.
I know a cop who adopted his nephew. He had the same firearm requirements while the kid was in placement with him and his wife. His opinion? Concealed means concealed. Once the ink dried on the adoption paperwork, he could do whatever he legally wanted. So, for six months, he "used" a lock box for his piece. Interesting box. Had two sections...one held the gun and one held a loaded magazine. So they were separately secured. he showed it to the social worker when she asked. And she only asked the first time.
It's too bad when good people get abused by the system because of fear of litigation, and end up having to choose between honesty and safety to please some paper pusher.