US Senators Elizabeth Warren and Roger Marshall have introduced a bipartisan bill designed to crack down on illegal uses of cryptocurrency. If passed, The Digital Asset Anti-Money Laundering Act would extend aspects of the Bank Secrecy Act (BSA), a Nixon-era law Congress passed to combat money laundering, to cover crypto entities such as wallet providers and miners. Specifically, the new legislation would apply so-called “Know-Your-Customer” rules to those entities by directing the Treasury Department’s Financial Crimes Enforcement Network (FinCEN) to treat them as money service businesses. Another BSA expansion would require US citizens to file a report with the Internal Revenue Service whenever they engage in transactions that involve more than $10,000 in digital assets.Additionally, the legislation would direct FinCEN to implement a rule the agency proposed at the end of 2020 that would require financial institutions to report transactions involving “unhosted” digital wallets.