Can I apply for American citizenship if I marry an American citizen and get a green card and then divorce? Is it related to divorce?

It depends on the specific time period from divorce to marriage. The following is a detailed explanation:

American citizens apply for a spouse immigration visa as CR 1 visa. If you have been married for more than two years, you will automatically change to an IR 1 visa, and then you can apply for a green card if you divorce and remarry. However, it is extremely difficult and risky to apply for a green card for the second marriage. If it is judged as a fake marriage by the Immigration Bureau, you will go to jail. If it is less than 2 years, you can't apply for a green card. If two people have been married for less than two years, the green card obtained by a foreign spouse is a conditional green card, commonly known as a temporary green card. The conditional green card is valid for two years. Three months before the expiration of the green card, the green card holder should apply for cancellation conditions. If approved, you can get a permanent green card, that is, a green card for 10 years.

Divorce and remarriage, and apply for a green card again, immigration officials are very likely to suspect fake marriage. There is a difficult judgment problem to choose. If the first one gets a green card, divorces, and then helps the second one get a green card, the second green card will be delayed and not approved. The immigration officer will not forbid it because the applicant is legally married, but the immigration officer will hold back. If you withdraw your application for the first semester, it will be helpful for your application for the second semester. Living with the second one will mean that you have no marriage relationship with the first one, so it is illegal to help the first one apply.