Another win for naturalization application. Applications for adjustment of status approved in a little over 90 days for clients from Mexico based on their adult U.S. citizen daughter. Now, as permanent residents, they can petition their 3 adult daughters. Application for Naturalization, is an application to become a naturalized U.S. citizen. Permanent resident for at least 3 years if you are married to a US citizen. Their child, however, does not have to go through the naturalization process (if they are under 18). You can check if you are already a citizen on the government website. However, if you’re not automatically a British citizen, you can become one through the process of naturalisation. Being a citizen is a status, while naturalisation is a legal process to acquire it. Naturalization Certificate, issued to a person who became a U.S. citizen after 18 years of age through the naturalization process.