Many people are citizens of the United States as derivatives of their parents’ citizenship, either by birth or naturalization. I have successfully petitioned for citizenship for many clients, including clients who would otherwise be deported because of criminal conduct. Sometimes, we have to prove a parent’s physical presence in the United States from many years ago. I have successfully proven physical presence in the United States prior to 1950, even where the parent passed away many years ago. For many clients, this gives the necessary proof of citizenship where the only alternative is deportation from the United States.