Good morning, Chicago. ✶🔎 Below: Understanding hospital billing was supposed to get easier, but a federal law on healthcare pricing has failed, a Sun-Times investigation finds.🗞️ Plus: Video contradicts an FBI agent's account of shooting a teen, CPS grads reflect on tumultuous years of learning and more news you need to know.📝 Keeping score: The White Sox lost to the Tigers, 5-4.📧 Subscribe: Get our morning newsletter delivered to your inbox…