I know there are software programs that can identify foreign officials - afterall the State Department has a list. And it may not be too difficult to figure out a spouse of a foreign official, but when you get to brothers, sisters, cousins, and consorts, you are most likely going to end up with a program that will spit out all kinds of false positives. This leaves you with the unenviable task of reviewing all of those, making further inquiries and investigations, etc.
Again, this is where RISK BASED programs are the key - is your risk of having a PEP greater with non-resident alien customers or with U.S. Citizens? Then again, you can have someone who is the brother of the Prime Minister of Farfetchia, and if that person maintains a low 4 average balance with typical "retail" type of transactions, what is your risk?
I hate to think that we will get dragged into a PEPS for PEPS sake kind of mentality. The first thing you should be paying attention to are those accounts that have $$$$ in wires, especially wires involving foreign geographies, and accounts that have $$$ in foreign ATM and other high risk transaction activity. Check if THOSE people are PEPS, and even if they are not, you need to vet those transactions.
The banks that have had PEP problems didn't get their because they had a few accounts that they didn't realize were related to some foreign head honcho, they got into trouble because they either willfully ignored high risk transactions, or worse, they were complicit in facilitating the transactions.
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CRCM,CAMS
Regulations are a poor substitute for ethics.
Just sayin'