According to the ACAMS CAMS Certification Study Guide (6th edition), the bank's anti-money laundering officer is responsible for overseeing the implementation and maintenance of the bank's anti-money laundering program, which includes reporting and escalating suspicious activities involving PEPs. The anti-money laundering officer should be informed of any unusual or potentially illicit transactions involving PEPs, and decide on the appropriate course of action, such as filing additional reports, conducting enhanced due diligence, or terminating the relationship with the PEP. The other options are not correct because they are either not directly involved in the anti-money laundering program, or not the appropriate authority to contact in this situation.: ACAMS CAMS Certification Study Guide (6th edition), page 77-78. 123456789

According to the Certified Anti-Money Laundering Specialist (CAMS) Manual [1], 6th edition, financial entities that violate Anti-Money Laundering (AML) laws can face several reputational risks such as loss of high-profile customers, seizure of assets, increased audit costs to monitor behavior, and monetary penalties.
For example, the US Treasury's Financial Crimes Enforcement Network (FinCEN) imposes civil money penalties on "persons who willfully violate, attempt to violate, conspire to violate, or cause any violation of any provision of the Bank Secrecy Act or its implementing regulations." (CAMS Manual, 6th edition, page
26).

According to the Financial Action Task Force (FATF), the global standard-setter for anti-money laundering and counter-terrorist financing, two channels that can be utilized during a cross-border money laundering investigation to assist in gathering information are contacting existing liaison officers in the foreign jurisdiction and exchanging information between national law enforcement agencies. These are two of the methods that the FATF recommends in its guidance on international cooperation1. The FATF states thatliaison officers can facilitate the exchange of information and intelligence, provide operational support, and coordinate joint investigations1. The FATF also encourages the use of bilateral or multilateral agreements or arrangements to enable the exchange of information and intelligence between national law enforcement agencies, as well as the use of informal networks or mechanisms, such as the Egmont Group of Financial Intelligence Units1.
Option C is incorrect because contacting the potential suspect or their family members to request information is not a recommended channel for cross-border money laundering investigations. This method may alert the suspect of the investigation, compromise the confidentiality of the information, or violate the legal rights of the suspect or their family members. Moreover, the information obtained from the suspect or their family members may not be reliable or admissible in court.
Option D is incorrect because submitting only formal requests for information to a financial intelligence unit (FIU) is not a sufficient channel for cross-border money laundering investigations. While FIUs play an important role in collecting, analyzing, and disseminating financial information, they are not the only source of information for cross-border investigations. The FATF guidance states that investigators should also seek information from other competent authorities, such as law enforcement, supervisory, or judicial authorities, depending on the nature and purpose of the information sought1. Furthermore, the FATF guidance advises investigators to use both formal and informal channels of communication, as formal requests may take longer or face legal obstacles1.
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1: FATF, International Co-operation Review Group, Guidance on Investigating and Prosecuting Money Laundering and the Financing of Terrorism, October 2012, pp. 13-18.

The main objective when a financial institution (FI) conducts an investigation is to track the movement of the money. Money laundering is a process of disguising the proceeds of criminal activity to make them appear legitimate. The movement of money is an essential element in the process of money laundering. Therefore, tracking the movement of funds is a crucial step in identifying and preventing money laundering. A financial institution must be able to recognize suspicious transactions and report them to the relevant authorities. An investigation is conducted to gather evidence and establish a clear understanding of the transaction flow, the parties involved, and the nature of the activity. This information is used to determine if the transaction is suspicious and if it violates any laws or regulations.
While keeping policies and procedures updated, keeping documentation, and knowing the customer are essential components of a comprehensive anti-money laundering (AML) program, these activities are not the primary objective of an investigation. Policies and procedures need to be updated to reflect changes in regulatory requirements and emerging money laundering risks. Documentation must be retained to provide evidence of the investigation process and outcomes. Knowing the customer is essential to identify and verify the customer's identity and assess the risk associated with the relationship.
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ACAMS Study Guide for the CAMS Certification Examination - 6th Edition, Chapter 3: AML Programs, Section 3.2: AML Program Components, Subsection 3.2.4: Transaction Monitoring and Investigation, pp. 87-
88
Main Objective of Conducting Investigations - exam-answer.com

The rules imposed by the Office of Foreign Assets Control (OFAC) for legal entities and persons related to the US are:
Nationals of the US must comply with OFAC rules, regardless of where they are located in the world. This means that US citizens, permanent residents, and entities organized under US law are subject to OFAC sanctions and prohibitions, even if they operate or reside outside the US12.
Any foreign corporation is also penalized if it conducts transactions with sanctioned countries under OFAC rules. This means that non-US entities that engage in trade or financial dealings with OFAC-designated countries, entities, or individuals are liable to face civil or criminal penalties, as well as secondary sanctions that could restrict their access to the US market or financial system34.
The other options are not correct, because:
A subsidiary of a legal entity of the US, which is formally registered in a foreign country, is not exempt from OFAC rules. This means that foreign-incorporated entities that are owned or controlled by US persons or entities are also subject to OFAC sanctions and prohibitions, unless they are specifically authorized or licensed by OFAC12.
A foreign individual visiting the US for a short vacation is not obligated to follow OFAC rules. This means that non-US persons who are temporarily present in the US are not subject to OFAC sanctions and prohibitions, unless they are involved in transactions that have a US nexus or violate other US laws.
The head office of a foreign legal entity which has a branch in the US does not need to comply with OFAC rules. This means that non-US entities that have a presence or operation in the US are not subject to OFAC sanctions and prohibitions, unless they are involved in transactions that have a US nexus or violate other US laws.
References:
ACAMS CAMS Certification Video Training Course - Exam-Labs3
Exam CAMS: Certified Anti-Money Laundering Specialist (the 6th edition)4 ACAMS Study Guide for the Certification Examination, 6th Edition, Chapter 7, page 147: https://www.acams.
org/wp-content/uploads/2019/08/ACAMS-Study-Guide-6th-Edition-Chapter-7.pdf ACAMS Study Guide for the Certification Examination, 6th Edition, Chapter 7, page 148: https://www.acams.
org/wp-content/uploads/2019/08/ACAMS-Study-Guide-6th-Edition-Chapter-7.pdf ACAMS Study Guide for the Certification Examination, 6th Edition, Chapter 7, page 149: https://www.acams.
org/wp-content/uploads/2019/08/ACAMS-Study-Guide-6th-Edition-Chapter-7.pdf