As far as I can tell, they are only required by law to ask for identification; no requirement about asking why. The report they make goes to the IRS where the

As far as I can tell, they are only required by law to ask for identification; no requirement about asking why. The report they make goes to the IRS where the IRS might ask a question. https://finance.zacks.com/federal-banking-rules-withdrawing-large-sums-cash-1696.html https://finance.zacks.com/federal-banking-rules-withdrawing-... The teller asked for identification which exactly what the law requires, so it doesn't sound like they screwed up.