The quickest (and probably smartest) thing to do would be to use the core examination procedures in the FFIEC manual.
If you buy the bank, you buy the BSA/AML program, warts and all. You need to know what you have and, in the case of a bank with BSA problems, I have seen the purchase price negotiated downward after the BSA/AML review.
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In this world you must be oh so smart or oh so pleasant. Well, for years I was smart. I recommend pleasant.