In 2026, Tether froze about $550 million in USDT to addresses that U.S. authorities linked to the Central Bank of Iran and sanctions-busting networks.

In April, the company froze over $344 million USDT on two addresses at the request of OFAC and U.S. law enforcement agencies. In July, an additional over $130 million USDT was frozen across four wallets.

Tether states that it cooperates with more than 340 law enforcement agencies in 67 countries. In total, over $4.9 billion in assets have been frozen with its involvement.

The freezes are occurring against the backdrop of the expansion of the U.S. Operation Economic Outcast campaign, which is aimed, among other things, at preventing Iran from using cryptocurrencies to circumvent sanctions.