When it comes to U.S. security and dealing with top secret information, I'm afraid I must disagree with you. While I agree with you in one respect, not having dual citizenship is no guarantee of loyalty (Pollard, Hansen), people with dual citizenship, by the very fact that they have not renounced their previous citizenship or, if they are native born Americans, have accepted the citizenship of a second country, have publicly stated their loyalty to a second country. The very fact of possessing citizenship is a statement, or action, of loyalty (or it should be). It doesn't necessarily mean that a dual citizen would be disloyal to the U.S., but I for one want to minimize all possibilities or opportunities of disloyalty in the realm of U.S. security. If someone hasn't renounced all non-U.S. allegiance by the time they get to the position in the military or intelligence community where they would ordinarily qualify for a security clearance, that says something about that person. It says, "I am under obligation to two countries."
By the way, do you question the loyalties of Israeli Arabs? Do Israeli Arabs get top security clearances in the Israeli military? Are they even allowed to be in the Israeli military? (I'm not being smart-aleck--I don't know how it works over there.)
By your doubts, since I purposely attained US citizenship, it is Israel that should question my loyalty.
You are making too much of dual citizenship. In reality its nothing more then paperwork. Loyalty is in the heart and actions depend on honor. For both dual and sole citizens.
And again to prove my point. Israeli Arabs are judged individually. There are non-Jews in very sensitive positions in Israel.