The US SEC filed a lawsuit against the auditing company Prager Metis, accusing it of violating the principles of independence when providing audit services to the FTX cryptocurrency exchange. Instead of separating auditing and accounting services, as required to prevent conflicts of interest, the company mixed these activities. Senators Elizabeth Warren and Ron Wyden raised concerns about Prager Metis's impartiality, suggesting the firm was acting more as a supporter of the cryptocurrency industry than an independent auditor.