In this video, health-care analyst David Williamson discusses how Obamacare and sequestration are weighing on shares of insurer UnitedHealth (NYSE:UNH). David breaks the managed care company's quarter into Clint Eastwood-inspired good, bad, and ugly segments, helping investors in UnitedHealth, and related stocks, to find out everything they need to know from this bellwether's earnings, and what to expect going forward.