https://www.vice.com/en_us/article/jgmqvg/the-us-government-made-it-illegal-to-buy-these-nfts

The U.S. government put 57 cryptocurrency addresses and one exchange on the OFAC sanctions list on Monday for facilitating ransomware and money laundering. As it turns out, one of those addresses controls a bunch of NFTs that are currently still for sale on one of the most popular digital marketplaces. 

Blockchain infosec company Elliptic pointed this out in a blog on Tuesday, noting that the total amount of cryptocurrency in the sanctioned addresses amounts to more than $300 million. The sanction designation chiefly concerns a Latvia-based exchange Chatex, which the Treasury Department says facilitated transactions related to “illicit or high-risk activities such as darknet markets, high-risk exchanges and ransomware." It's the second time the US government has sanctioned an exchange, and the eighth time it has sanctioned crypto addresses, Elliptic notes.