The recent amendments to the US anti-money laundering legislation  let the US obtain banking records on any individual/company worldwide which uses a bank which proceeds payments in USD (effectively any large bank). Such rules are ignorant of banking secrecy and guarded by painful fines.
Request for records: wide powers
- any investigation on violation of the US criminal law;- any investigation on violation of the US legislation on records/reports on monetary transactions;
- a civil forfeiture action;
- an investigation related to money laundering concerns of the US Treasury (into specific banks, classes of transactions or jurisdictions).
However, the US authorities are not obliged to specify details of such investigation in the request or to prove reasonability of allegations with regard to a holder of an account. The only detail available on such investigation will be a judicial district where it is carried out, so that the requested bank knows in which US court the request can be challenged.
The law directly excludes an option to raise a banking secrecy defense and provides that a conflict with a secrecy provisions of the bank`s native jurisdiction cannot be a sole basis to cancel or modify the request.
An appetite of the banks to litigate over such requests remains to be seen.
Failure to comply with the request
The court may oblige the bank to appear before the US authorities to produce either requested records or testimony on such records as well as punish a failure to obey as a contempt of court.
Termination of a correspondent relationship
All the mentioned penalties (related to non-disclosure, failure to comply with the request etc) can be satisfied via seizing any funds held in the US correspondent account of a bank.
Penalties along with a risk of losing a possibility to make transactions in USD constitutes a very material argument to incentivize banks to disclose information.
Considering the case law-driven nature of US enforcement, it would be worth keeping eye on the courts` positions on this law.
Such changes maintain a trend on transparency of information on financial flows and assets worldwide and highlight necessity of proper structuring and documenting of transactions to prevent excessive scrutiny.
 Section 6308 of the National Defense Authorization Act for Fiscal Year 2021