FinCEN is soliciting public comment on a potential rule to address the vulnerability, in the U.S. real estate market, to money laundering and other illicit activity.
Currently, title insurance companies in just 12 metropolitan areas are required to file reports concerning all-cash purchases of residential real estate, if the transaction exceeds $300,000. This may be expanded under the new rule.
https://www.fincen.gov/sites/default/files/2021-12/RE_ANPRM_FRN_120321_FINAL_508.pdf