USDT pops up in New York case featuring member of the Cartier jewellery family. Stablecoin issuer taps Chainalysis for help. Anti-money laundering officials say USDT is widely used to wash dirty money. In 2023, Tether froze nearly $900,000 linked to donations to Hamas and illicit activity in Ukraine. It also froze $225 million in USDT tied to crypto romance scams.