First hand experience (US citizen): When you open a bank account overseas, they ask you if you are subject to FACTA (US passport or green card). Then you are given a multi-lingual form that explains all about FACTA, and require you submit your passport (for scan/photocopy) and to sign a form acknowledging the bank will end your account details annually (at least!) to the US IRS. I confirm this is true multiple times -- different banks, different countries. Surprisingly, even ones where the service is 100% non-English (read/write/speak!), they will still bring out multi-linguage forms and do a bunch of pointing to confirm.

Funny story: Overseas, I can remember going through anti-money laundering training. The week after, I went to open a new bank account. When I told them I was a US citizen, the account rep said -- without missing a beat -- "Do you want to report?" Jeez. That question alone is probably enough to get that bank into trouble! Obviously, that person failed their own FACTA training...