A 5-month-old boy from Washington, D.C., was recovering Tuesday evening at Children's Hospital of Pittsburgh in Oakland after receiving part of his mother's liver. The case of Peter Hayes has attracted national attention because his mother, Catherine Herridge, is a national correspondent for Fox News Channel. Herridge's story has been told in recent days by Fox host Greta Van Susteren. Herridge, 42, donated part of her liver to save her son from a life-threatening illness that blocks the bile duct. The disease, known as biliary atresia, causes bile to build up in the liver and poison it. Herridge and her...