How long it takes visa sponsorship if I get an offer these days? Last summer it was 1 year for me Iran-Europe citizen.

Do you mean a non US company inside the US or apply to another country?

I think Iran is the only country in the world where you can’t renounce citizenship. So once an Iranian always an Iranian.

Yes. It is not possible to give that up. In Addition, I have a EU citizenship but last year Meta gave me a form that was mentioned sign it here if you are Iranian, North Korea etc. there was nothing there to mention my other citizenship. Also it happened two other companies they told me they do not follow up the interviews because they asked the hiring process takes more than a year.