Yes, this is a useless post, but some might find it mildly interesting.
Who knew there was a CU eager for US expat business? (US State Dept CU)
https://www.sdfcu.org/articles-membership-top-reasons-why-expats-bank-with-sdfcu
And for members of the United Nations Credit Union (Eligibility Rules: https://www.unfcu.org/join/eligibility/), here's some account restrictions info for those working in North Korea, Cuba, Syria, and other places: https://www.unfcu.org/join/account-restrictions/
I love that there are credit unions like these. I honestly wish I had known about a CU eager to work with expats 30 years ago. There must be a CU for just about anything these days -- when even the CU originally formed for CIA employees (NWFCU -- which until not too long ago still had blank ATM cards with no institution name, identification, or phone number anywhere on it), is now offering $400 checking bonuses when people sign up.
If anyone knows of any other CUs that are willing to cater to an unusual clientele, please add them to the thread.