The Hidden Cost of Cheaper Drug Prices

May 5 -- Despite political uproar over U.S. drug pricing, pharmacy benefit managers, or PBMs, such as CVS Caremark and Express Scripts are the only ones that have really managed to lower drug prices for many. But their controversial playbook involves making it harder for some people to access medicines. Bloomberg Gadfly's Max Nisen looks at how PBMs work within the broken U.S. health-care system.