OKLAHOMA CITY, Oklahoma, Oct. 20 -- Sen. James Lankford, R-Oklahoma, issued the following news release and letter: Senators James Lankford (R-OK), Roger Marshall, M.D. (R-KS), Shelley Moore Capito (R-WV), and Marsha Blackburn (R-TN) sent a letter to the US Food and Drug Administration (FDA) questioning the agency's response to stopping the opioid epidemic. The letter follows industry feedback on the FDA's lack of communication and clarity regarding its guidance for the development of new non-addictive pain medicine. The FDA's guidance has had  more PR