Read this tip to make your life smarter, better, faster and wiser. LifeTips is the place to go when you need to know about Immigration Records and other Genealogy topics.
If your ancestor is a naturalized United States citizen who immigrated to the U.S., try exploring the various ships that your ancestor may have sailed over on. If you have a passport and the date it was issued, you can request, for free under the Freedom of Information Act from the state department in Washington DC. You will need to prove that your ancestor is deceased. You will also need the passport applicant's name, passport number, year of birth, date of naturalization, place of residence, year of travel and your name, mailing address and telephone number. This request will take a bit of time to process, so be patient!