They’re bluffing. There is no federal law against audits. It’s not federal business.
The Constitution also forbids the Federal government from running Medicare, or Medicaid, or telling you what kind of toilet you can have, or light bulb your can buy, but they do it anyway.
This mess we are in now cannot be fixed at the ballot box, and between COVID lockdowns and Big Tech censorship, the soap box is not a viable option either ...