The US Treasury Department sanctioned the MEXC exchange because its trading was linked to sanctions evasion by Iran, North Korea, and Russia. If you have money in MEXC, don't withdraw it directly to exchanges like Binance or OKX, as this could compromise your account security. Transfer it to a self-custodied on-chain wallet as a temporary measure. Offshore exchanges, lacking government support, are facing increasingly squeezed survival: they are either severely penalized and fined for compliance issues, or they suffer state-sponsored attacks and data breaches.