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TREAS/FINCEN RIN: 1506-AB71 Publication ID: 2026 
Title: ●Proposal of Special Measure Regarding MBaer Merchant Bank AG as a Financial Institution Operating Outside of the United States of Primary Money Laundering Concern 
Abstract:

FinCEN issued a notice of proposed rulemaking, pursuant to section 311 of the USA PATRIOT Act, that identified MBaer Merchant Bank AG (MBaer), a financial institution based in Switzerland, to be of primary money laundering concern, and proposes imposing a special measure to: (1) prohibit U.S. financial institutions from opening or maintaining a correspondent account for, or on behalf of, MBaer; (2) require U.S. financial institutions to take reasonable steps not to process a transaction for the correspondent account in the United States of a foreign banking institution if such a transaction involves MBaer; and (3) require U.S. financial institutions to apply special due diligence to their foreign correspondent accounts that is reasonably designed to guard against their use to process transactions involving MBaer. 

 
Agency: Department of the Treasury(TREAS)  Priority: Other Significant 
RIN Status: First time published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: No  Unfunded Mandates: No 
EO 14192 Designation: Regulatory 
CFR Citation: 31 CFR 1010.666   
Legal Authority: 31 U.S.C. 5318A   
Legal Deadline:  None
Timetable:
Action Date FR Cite
NPRM  03/02/2026  91 FR 10034   
Final Action  07/00/2026 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
International Impacts: This regulatory action will be likely to have international trade and investment effects, or otherwise be of international interest.
RIN Data Printed in the FR: No 
Agency Contact:
FinCEN Regulatory Support Section
Department of the Treasury
Financial Crimes Enforcement Network
P.O. Box 39,
Vienna, VA 22183
Phone:800 767-2825
Email: frc@fincen.gov