Do I need to declare all my citizenships to my broker or bank?

External question — Personal Finance Stack Exchange Author: user113382 Original post: https://money.stackexchange.com/questions/146760 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. Do I need to declare all my citizenships to my broker or bank? This is a follow up question https://law.stackexchange.com/questions/75069/can-one-of-my-citizenships-cause-problems-with-investing