; (ii) not offered for sale, traded, or otherwise converted to fiat currency or another digital asset; or (iii) otherwise deemed to pose little illicit finance risk. (C) Periodic reviews The Secretary of the Treasury, through the Director of the Financial Crimes Enforcement Network, shall periodic reviews of the classifications under paragraph (2). (b) Registration rules The Financial Crimes Enforcement Network has the authority to subject the entities described in subsection (a) to the registration rules under section 5330 of title 31, United States Code, and the foreign registration rules under section 1022.380(a)(2) of title 31, Code of Federal Regulations. (c) Implementation of proposed rule Not later than 1 year after the date of enactment of this Act, the Financial Crimes Enforcement Network shall finalize the proposed virtual currency rule (85 Fed. Reg. 83840; relating to requirements for certain transactions involving convertible virtual currency or digital assets). (d) Reporting requirements Not later than 18 months after the date of enactment of this Act, the Financial Crimes Enforcement Network shall promulgate regulations that require United States persons with greater than $10,000 in digital assets in 1 or more accounts outside of the United States to file a report described in section 1010.350 of title 31, Code of Federal Regulations, using the form described in that section, in accordance with section 5314 of title 31, United States Code. (e) Treasury regulations Not later than 18 months after the date of enactment of this Act, the Secretary of the Treasury shall promulgate regulations that require financial institutions to establish controls to mitigate illicit finance risks associated with— (1) handling, using, or transacting business with digital asset mixers, anonymity enhanced cryptocurrency, and other anonymity-enhancing technologies, as specified by the Secretary