As Michael Moore called for legal action against health insurance executives, lawmakers also heard testimony from several people featured in “Sicko.” Dawnelle Keys talked about how her 18-month-old daughter died after being denied treatment at a hospital. Andy Bales of the Union Rescue Mission in Los Angeles testified about how hospitals dump patients on Skid Row. And Dr. Linda Peeno spoke about her work as a medical reviewer for the health insurer Humana. She says she denied one patient a life-saving operation to protect company profits.