I am only loyal to the country I am a citizen of, and that is the USA.
You are confusing dual loyalty with
treasonous dual loyalty. An Italian-American has dual loyalty in the sense that he has loyalty to both his country and his people's homeland. That is not only legitimate, but unremarkable. It's true for everybody to one degree or another -- we all have multiple loyalties to multiple groups, from our immediate family to the planet as a whole.
What an Italian-American does
not have a right to do is the right to
commit treason -- to, say, spy for Italy against the USA and to claim that it is an act of loyalty, or to broadcast propaganda for Italy during a war with the USA (as Ezra Pound did, though not an Italian-American).
The problem is that some people confuse the two types of loyalty. They are so fearful somebody will accuse them of "dual loyalty" and doubt their patriotism, that they go out of their way to dump on, unfairly criticize, and on the whole be obsessed with pointing out real or imagined flaws of their homeland, with the forlorn hope that this will, somehow, make those who accuse them of "dual loyalty" satisfied.
They won't. Those who accuse American Jews of being "doubly loyal" for being sympathetic to Israel will not be satisfied because the motive for their accusation is hatred of Jews because they are Jews, not anything illegitimate American Jews did. This is much the same situation as those who accused Italian-Americans of being "doubly loyal" to the pope over the USA were simply haters of Italians, and couldn't care less if the man they accuse of such "double loyalty" was actually excommunicated or never went to church.
They Jew-haters will just find some other excuse to hate, and they will simply add contempt at Jews to their reason to hate Jews. They will sneer, justifiably I must say, at the lack of spine and groveling by those Jews who bend over backwards to be "good Jews" they have no rational reason to hate; at the
naifs who actually took the excuse
du jour for Jew-hatred as if it had anything to do with the real reason for their hatred.
We've seen this before, numerous times. Remember the Jews who, in the 1920s, went out of their way to show they are
good Jews, that is, part of the then-fashionable communist movement, and
not in any way related to those silly, outdated, dark-coat-wearing, superstition-believing "bad" Jews? Now, surely, these "good Jews" said to themselves, we will not be hated.
Bad idea: as could be expected, the only result was that the "good Jews" were, if anything, hated all the more -- and there was the additional excuse, the "Jews are all commies" one.
Examples could be multiplied.