We are an FDIC regulated bank in Southern CA. We just finished our BSA exam and there was absolutely NO discussion about the Control List. They didn't ask and I didn't offer.
We received the original list and supplements. We followed the instructions. We did a ONE TIME check.
For those of you that are continuing to check names against the Control List (which I don't beieve is necessary), your procedures should make it clear that your response to a hit would be handled differently from an OFAC hit. My understanding was that some of the individuals on the Control List were not suspected terrorists themselves, but may have a connection to someone the FBI is looking for.
In my experience, when you do more than you are required to do, it may come back to bite you in the posterior.