Only a few hours left to add a comment in support of opening up COVID boosters for everyone, as opposed to only older and diagnosed immune compromised people, for this winter in the US. Go to the link and fill out the form. No registration required.

Your comment can be as simple as:

I support opening up COVID boosters to everyone for the upcoming winter.

https://www.regulations.gov/commenton/CDC-2023-0060-0001