Can one of my citizenships cause problems with investing?

External question — Personal Finance Stack Exchange Author: user113309 Original post: https://money.stackexchange.com/questions/146680 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. As a citizen and resident of Mexico, American and European brokers are happy to take my business. But I'm also a citizen of Syria, which is sanctioned. While filling out account creation forms, I don't see any options to add multiple citizenship information. So it seems I should be good but just checking