Under USA PATRIOT Act Section 311, the U.S. government can impose special measures against a foreign jurisdiction, institution, or transaction that is of primary money laundering concern1. These measures can range from requiring additional recordkeeping and reporting to prohibiting or restricting the opening or maintaining of correspondent or payable-through accounts for the designated entity2. A payable-through account is a type of correspondent account that allows customers of a foreign bank to access the U.S. financial system by writing checks or making wire transfers from the foreign bank's account at a U.S. bank3.
In this case, the U.S. government has enacted special measures against a designated entity that has a payable-through account with an EU bank, which in turn has a correspondent banking relationship with a U.S. bank. One of the possible actions that the U.S. bank might be required to take regarding the EU bank's services for the designated entity is to obtain additional information about customers permitted to use this account. This is to ensure that the U.S. bank can identify and monitor the transactions and activities of the designated entity and its customers, and to prevent any money laundering or terrorist financing risks4.
The other actions listed are not likely to be required by the U.S. government under Section 311. Ensuring the designated entity's confidential information is not shared with other entities is not a special measure, but a general obligation of any financial institution under privacy laws. Verifying that the EU bank serves the designated entity is not a relevant action, since the U.S. government has already designated the entity as a primary money laundering concern. Performing enhanced due diligence on the EU bank is not a specific action related to the payable-through account, but a broader requirement for any correspondent account under Section 312 of the USA PATRIOT Act5.
Reference:
1: USA PATRIOT Act | FinCEN.gov1 2: 311 Actions | U.S. Department of the Treasury2 3: Overview of Correspondent Banking and "De Risking" Issues - CRS Reports3 4: U.S. TREASURY DEPARTMENT OFFICE OF PUBLIC AFFAIRS4 5: Fact Sheet: Overview of Section 311 of the USA PATRIOT Act5