If Tether were in fact receiving real USD to support the billions in USDT it keeps issuing, then why hasn't it handed over financial docs to NYAG, which is investigating it for fraud? Why has it not had a third-party audit? Why does it keep printing USDT in larger and larger numbers (a sign that the real $$ may be disappearing from the system)? Why don't we see a similar growth in other regulated stablecoins?