Then I recommend some history books. Family ties can be strong and the persecution of the jews was not always as violent and open as it was during the war. It was more systematic discrimination in the beginning, so of course people still travelled back and forth. Uprooting a whole family is not a simple thing.

"Some even line up to vote for sham Presidential elections of the Mullah regime"

What else they are supposed to do?

That is a small option of influence and they use it. You think the Mullahs would loose their power if people just would not vote for them? If that would be true, they would be a democracy.