Tether Plans Big Four Audit of USDT Reserves Amid Regulatory Shift Tether CEO Paolo Ardoino confirmed the company is working to engage a Big Four accounting firm for a full audit of its USDT reserves, calling it a top priority. He said this is now feasible under the more crypto-friendly environment of Trump’s administration. While no firm or timeline was disclosed, the move aims to improve transparency ahead of potential stablecoin legislation.