How can I officially become a citizen when I have obtained an American green card?

To become American citizens, American immigrants need to live in the United States for five consecutive years after obtaining permanent residency (that is, green card). Of course, it doesn't mean that you can't leave the United States for five years, but you can't leave the United States for more than half a year. If you are not careful for more than half a year, you must provide proof that you have no intention to give up your right of abode in the United States. In this case, the time for applying for naturalization will be extended accordingly, and the residence time in the United States will be recalculated. When applying for naturalization, you must live in the United States for the last six months of five consecutive years and live in the local state or city for at least six months.

Applicants for naturalization must be at least 18 years old. If parents have already acquired American citizenship, foreigners under the age of 16 who have permanent residency can also automatically acquire American citizenship. On the other hand, if the applicant is under the age of 18, but one of his parents is an American citizen and the other is a foreigner, the one with American citizenship can apply for naturalization on his behalf before the child is under the age of 18.

Applicants must perform well during five years of continuous residence, and must have a certain understanding of American history, constitution and immigration laws. At the same time, the applicant should have basic English listening, speaking, reading and writing skills. During the naturalization qualification examination, immigration officials will ask questions orally, and applicants must answer questions about American history and government in English.