Form N-400, Application for Naturalization
Form N-400 may be filed by permanent residents that seek to apply for United States Citizenship. In order to use Form N-400 the permanent resident needs fulfill different requirements. Individuals that do not provide correct information may face consequences including denial of the application, stiff penalties and a potential deportation. Form N-400 (Application for Naturalization) may also be known as USCIS Form N-400, N 400, Form N400 or immigration form N-400.
Form N400 is included in the following application guides:
This immigration form is available for free at United States government websites.