From Guns.com:

In a letter sent at the end of May, the Academy of Doctors of Audiology, vouching support for “evidence-based practices in the delivery of audiovestibular care,” endorsed the Hearing Protection Act (H.R. 152/S.401) to improve access to suppressors. Holding that at least 7.5 million Americans hunt with a firearm each year and another 19 million regularly participate in target shooting, the organization recognized that “Firearm users are at high risk of developing NIHL (noise-induced hearing loss).”