I have obtained an American immigrant visa. How long can I get a green card after I enter the country?

The applicant is an American green card or citizen.

In general, you should get a temporary green card first, and then change it into a full card. You can apply for naturalization within six months after the green card expires five years.

If you are a citizen, you should be able to apply for naturalization with a green card for three years. )

If the applicant is not a green card or an American citizen.

Then you will receive an A5 card, and you can apply for a green card after the A5 card expires for one year (the time is not necessarily about one year, if you are lucky).

Green card can apply for naturalization after five years.