How would you screen out one and not the other? Dependent ID, maybe, but does that mean only those with spouses and children deserve welcome homes?
They could organize a group and all go in together maybe... have one officer (or president of the wives club or whatever) there to say that all of them are friends or family. It would be more of a pain to organize, but it would allow parents or friends to get through security too. Personally though I think it would make more of a difference when they are leaving, because then you have to wait around at the gate for a while and it would be nice if your family was there. Coming back it's only a difference of the few minutes it takes to walk from the gate to the baggage claim.