What can I do if USCIS denies my application?
If you think that USCIS was wrong to deny your naturalization application, you may request a hearing with an immigration officer. Your denial letter will explain how to request a hearing and will include the form you need. The form for filing an appeal is the "Request for Hearing on a Decision in Naturalization Proceedings under Section 336 of the INA" (Form N-336). You must file the form, including the correct fee, to USCIS within 30 days after you received the denial letter.
If, after an appeal hearing with USCIS, you still believe you have been wrongly denied naturalization, you may file a petition for a new review of your application in U.S. District Court.
Can I reapply for naturalization if USCIS denies my application?
In many cases, you may reapply. If you reapply, you will need to complete and resubmit a new Form N-400 and pay the fee again. You will need to have your fingerprints and photographs taken again. Your denial letter should indicate the date you may reapply for citizenship.
If you are denied because you failed the English or civics test, you may reapply for naturalization as soon as you want. You should reapply whenever you believe you have learned enough English or civics to pass both tests.