The Doctors for Responsible Gun Ownership published a white paper on Firearm Suppressor / Silencer use recommending making firearm suppressors/silencers readily available to the public as a critical health intervention to prevent hearing loss.
They support the The Hearing Protection Act of 2017 (HPA) (H.R. 367 1 and its companion bill S.59 2). Be sure to contact your State representatives and urge them to support these bills.
The NSSF posted about this on their blog as well: