How can I prove I did not become an American citzen without a green card

To make an observation, most people want to prove that they are US citizens and not the other way around. You say that you applied for the renewal of your green card and it was approved, but the card never arrived. If so, you would have the I-797 approval sheet showing that your I-90 application for a replacement green card was approved. Perhaps the Dutch authorities would accept that piece of proof along with your affidavit that you never applied for US citizenship. I am not aware of any other form that you could fill out to prove that you are not a US citizen.Due to the limitations of the Lawyers.com Forums, Alan Lee, Esq.'s (the "Firm") participation in responding to questions posted herein does not constitute legal advice, nor legal representation of the person or entity posting a question. No Attorney/Client relationship is or shall be construed to be created hereby. The information provided herein by the Firm is general, and requires that the poster obtain specific legal advice from an attorney. The poster shall not rely upon the information provided herein as legal advice nor as the basis for making any decisions of legal consequence.