Update: Investigation commences this week. Yes, it takes time to get such set up.
Hopefully I'll be able to post an official email contact. In the meantime, collect evidence of EEOC, ADA, age discrimination and so forth. Concrete evidence is best, but issues that show a pattern are also helpful.
If you suspect you were terminated or "laid off" because of vax status, please know that in several states that is also illegal.