Update:
www.omm.com/resources/alerts-and-publications/alerts/new-guidance-on-firptas-application-to-reits-rics-foreign-governments/
www.morganlewis.com/pubs/2023/01/treasury-issues-final-regulations-on-firpta-exemption-for-qualified-foreign-pension-funds
www.mayerbrown.com/en/perspectives-events/publications/2023/01/us-treasury-releases-final-and-proposed-regulations-on-qualified-foreign-pension-funds-and-other-issues-under-firpta