Local USCIS N-400 Processing Time & Fee Hello, Users!!! If you are applying for US Citizenship through Naturalization then you will be eager to know about USCIS N-400 Processing Time. So, here the post related to the United States Citizenship and Immigration Services which will help you from every instinct from N-400 form instructions to get the United States citizenship … [Read more...] about USCIS N-400 Processing Time | Form Instructions, Fees