As you go through the process of becoming a naturalized citizen of the United States, you go through several statuses. When you first arrive in the United States, U.S. Citizenship and Immigration Services considers you as a non-immigrant or parolee (temporary). Once you go through the admissions and inspection process, you could become eligible for the "adjustment of status" process whereby you become a permanent resident (obtain your green card).
For an issue as important as renewing your green card, which allows you to legally reside in the United States, always keep in mind that the best action you can take is to find and consult with an attorney. A competent attorney can guide you through the process of renewing your green card, making it as simple as possible and avoiding mistakes that could result in a denial. Following are answers to several common questions about green card renewal: