I would add that, if your focus is to say that government advertising should be principally about information, then, yes, you would need to have some sort of body such as Dr. Rose mentions. If the idea, though, is to have effective advertising, that becomes a bit of a challenge, because we can have advertising that provides information but ends up not giving very good value for money. You do actually have to try to provoke an emotional response or get people to pay attention to it.
Frankly, I've seen some government advertising in the last couple of years that is terrible. It's so bland and bad that I think it shouldn't even be on the air. We just have to be careful what we wish for.