drug manufacturers

Susan Walsh / Associated Press

Ohio Attorney General Mike DeWine and his counterparts from a half dozen other states joined U.S. Attorney General Jeff Sessions to announce the next steps in the battle against opioid addiction. 

Drugmakers gave millions of dollars to pain-treatment advocacy groups over a five-year period beginning in 2012, in effect promoting opioids to individuals most vulnerable to addiction, according to a new report released Monday by a U.S. senator.