According to Odaily Planet Daily, Phoenix Labs and Spark Protocol CEO Sam MacPherson said that USDS after DAI upgrade will have a freezing function. Previously, centralized stablecoins such as USDT/USDC all had freezing functions. In addition, the Sky official website after upgrading from MakerDao also has a function that prohibits the use of VPN login, which is suspected to block some areas on the front end.