I recently heard about this proposed and sponsored bill earlier this morning when I was getting additional information for a deaf-blind adult. I, being a one of a few number of people who are passionate in working with deaf-blind children and adults, I think that this bill needs to support the entire population of people, both children and adults, who are blind, deaf, or deaf-blind. So, how can I request a hearing at the state capitol so I and my friends can testify if this is a federal bill?
The process of having a "hearing" is called "lobbying".
You can call your Congress member's district office to arrange a meeting. You'll probably be asked to fill out some paperwork to prepare for the meeting. It may be rather complex, so if you can form an interest group you can share the load.
You then go to see your Congressperson at the arranged time, usually in their local office (not the national or state Capitol), and explain what you are asking and make your case.
There are various resources explaining the lobbying process on the internet. I used one produced by the Quakers: How to meet with Congress