Iran is barely over 50% Persian, and Arabs, Baluchis, Azeris, Kurds and many other groups feel left out of the society. That regime has a lot more weaknesses than people see.
Most analysts would agree that if all the undocumented immigrants in California were deported in one day, our state would experience a severe economic downturn. This does not even consider the many cultural and spiritual gifts these immigrants bring to our state and nation.