Elisabeth Rosenthal writes about our broken healthcare system in her new book, "An American Sickness: How Healthcare became Big Business and How You Can Take it Back." She says the system, comprised of hospitals, doctors, insurance companies, and drug manufacturers, is in tatters. Social and financial incentives have infected it, she says, rendering it disastrous and immoral. How has the Affordable Care Act impacted the system? And what kind of effect would a repeal have? Rosenthal is an emergency room doctor turned journalist. She spent 22 years at The New York Times before becoming editor-in-chief at Kaiser Health News.