Why don't you address that same question to the new head of the JDL - a former l.e.o. and Vietnam Vet, and the world's sweetest guy?
If he is a Israeli-Firster,I wouldn't hesitate a instant to ask him the same thing,and give him the same advise. He ain't the "worlds sweetest guy" if he is living in America and gives his loyalty to another country.
BTW,maybe you should do what I did,and go to the JDL website to check out Rubin yourself. He is NOT a "Viet Nam veteran" according to his bio,but merely a Air Force veteran. His main claim to fame seems to be trying to prevent Christians from having a Christmas display. Some hero you got for yourself,there.