I suppose taken to the extreme they could try to control which transactions miners who are subject to US law or influence accept, which would be an interesting

I suppose taken to the extreme they could try to control which transactions miners who are subject to US law or influence accept, which would be an interesting experiment likely doomed to fail. But they don't really need to. From what I can tell the immediate concern is about strengthening guidance and making sure Exchanges (and other entities dealing in crypto) enforce OFAC blacklists, etc. The volume of real world trade settled in cryptocurrency is still so low the article suggests it wouldn't have much impact at scale (per Carol House, the director of cybersecurity for the National Security Council "The scale that the Russian state would need to successfully circumvent all U.S. and partners’ financial sanctions would almost certainly render cryptocurrency as an ineffective primary tool for the state"). More likely her comments are intended to paint the crisis into a narrative Warren and like-minded legislators want to construct around crypto in advance of debate that will occur after the upcoming Biden announcement [1] and moreso once the agencies he will task to examine it report back (most of whom I anticipate will come back with fairly crypto-unfriendly stances). [1] https://ca.finance.yahoo.com/news/biden-order-on-crypto-oversight-expected-next-week-source-says-173452499.html https://ca.finance.yahoo.com/news/biden-order-on-crypto-over...