Are you sure? As a naturalized citizen, I will never forget the words of the oath I took: "I hereby declare, on oath, that I absolutely and entirely renounce and abjure all allegiance and fidelity to any foreign prince, potentate, state, or sovereignty, of whom or which I have heretofore been a subject or citizen;
I don't know what this means to you, but to me it means that I gave up my Spanish citizenship the day I became an American.
My wife recently took the oath of citizenship after living here 33 years with a
Green Card. The Homeland Security official who administered the oath said “If there is any part of the oath you object to, then just don’t say that part of the oath.”
I was a bit dismayed as to the way citizenship was treated as sort of take it or leave it. Like choosing the laws you will obey and disregard the rest.
My Mom had to give up her Italian citizenship to gain U.S. citizenship. We have been under the impression the U.S. doesn’t allow both.