Who donates to them, that has to be revealed, right?
Donors don’t have to be revealed.
Tom Cotton is a big recipient of Club for Growth money.
https://www.opensecrets.org/orgs/summary.php?id=D000000763
The Club for Growth and the Chamber of Commerce are one in the same, made up of the same RINO, NWO types who care nothing about the country and only want to pad their bank accounts.