Of course children are dying in ill-prepared EDs across America. They always have. Like anything else, the fix is going to involve resources, such as extra staff, equipment, training, medications and dedicated facilities. But since critically ill and injured children are a very small percentage of patients, it's not PROFITABLE to the businessmen of Medicine to do commit the money and resources. Therefore it's not going to get done.
Of course the American media will, as always, blame the doctors saying they're stupid, ill-trained, greedy and don't care, while completely ignoring the actual source of the problem.