The Ethereum-based platform Tornado Cash was outlawed on August 8 by the Office of Foreign Asset Control (OFAC), a financial watchdog inside the U.S. Treasury Department. Since then, disagreement has surrounded OFAC's efforts to impose sanctions. Of course, OFAC's sanctions had a knock-on effect and other businesses, including the Centre consortium of Circle Financial and Coinbase, Github, and Discord, took action. For instance, Tornado Cash's Discord channel was removed, developers were suspended from Github, and reports claimed that Centre blocked dozens of Ethereum addresses and frozen 75,000 USDC.
Tether noted that it might be "extremely disruptive" and "reckless" to arbitrarily freeze wallet or smart contract addresses. It might warn potential suspects of an upcoming police investigation, result in liquidating or abandoning assets, and impede the collection of more evidence.
Neither U.S. authorities nor law enforcement has contacted Tether about freezing OFAC-sanctioned addresses, but Tether cooperates with U.S. officials, regularly communicating with them.
The business said there had been occasions when they were instructed to refrain from freezing suspicious private wallets to prevent alerting the subject of an inquiry and causing them to liquidate or abandon the funds. Tether's blog post also criticizes several stablecoin issuers, including Paxos, a licensed business with headquarters in New York.