Naturalized American Citizen

Is there any proof that you lost your German citizenship when you were naturalized? Whether one loses or keeps their original citizenship has changed over the years. You need to start with an appointment at the closest German consulate to your place of residence.
Edit: The embassy is in Washington, but the consulates are scattered throughout the States to handle administrative matters.

galaxy,

I'd suggest contacting the nearest Germany Embassy. If they can find a record of your birth and obtain a birth certificate, you may be able to obtain citizenship. They would be the best ones to answer that question.

At what age did you become an American citizen? Were you still under 18? Was ist recently as an adult? Did you get a "Beibehaltungsgenehmigung" before you applied for American citizenship?

The other issue is the conditions for a naturalized citizen. For some reason, I thought they had to renounce prior citizenships. Second, just because you were born in German may not give you automatic German citizenship. The US does but some countries require a affirmation at a certain age. Have no idea what the German requirements. And you are going to get an answer here that you can rely on. We guessing and giving opinions. No facts.

Might have to prove that a PARENT was a German citizen -- not just that the applicant was born in Germany, which does not guarantee citizen status. German records would be key here. Agree that the German consulate would be the place to start.

@ Frank, it depends on the original country whether you have to renounce citizenship. Countries have become more lenient over the Years. The US now allows it.

We're dual EU/US. Sen. Lugar's office researched it for me after an employee at my husband's consulate suggested I become dual. A friend's son just added British since his mom was born in London. Went off to London and found a job.

so you'll need to contact two government offices: the German consulat for your jurisdiction. We don't know anything about the circumstances of your naturalization. Second, contact the State Department, or the office of your senator if you have one with a good staff who can research it for you. I was lucky to have Sen. Lugar's staff find all the relevant legislation for me.

About renouncing foreign citizenship to become a US citizen, Bets beat me to it, but I will just tell how I know this.

My mother and grandmother were both born in Canada. Both moved to the US, and eventually became US citizens (they started the process by marrying Americans, but that's only a first step). My grandmother became a US citizen sometime in the 1960's and had to renounce her Canadian citizenship. My mother became a US citizen in the early 1980's, and did not (so she's technically a dual citizen, although she does not have a current Canadian passport and does not "do" anything with her Canadian citizenship at present).

So, yes, the OP needs to first find out whether he/she still is a German citizen. If the answer is yes, it shouldn't be too hard to get a German passport (although getting the necessary papers may take some time, and a personal visit to a consulate will be required).

Since you'll need to deal with the German Consulate sooner or later, here are their US offices: http://www.germany.info/relaunch/info/missions/consulates.html