Dec. 17, 2017 – The Cherokee suit argues that the pharmacy chains Walmart, Walgreensand CVS Health, as well as the giant drug distributors McKesson, Cardinal Health and AmerisourceBergen, flouted federal drug-monitoring laws and allowed prescription opioids to pour into the Cherokee territory at some of the highest rates in the country. Such neglect, Mr. Hembree claims, amounts to exploitation of a people.