Tether wants Audit by Big 4

DL news report says Tether CEO Paolo Ardoino wants to have Tether audited by one of the Big Four accounting firms - Deloitte, PwC, Ernst & Young , and KPMG. However, none of them is willing to work with Tether.

I think the reason is that many analysts accuse Tether of fraud and supporting terrorists, moreover anti crypto politicians like Elizabeth Warren are shamming crypto audits.Henceforth big companies do not want to get involved with it.