The child is a U.S. citizen and applies for a U.S. green card for his retired parents. What benefits can the parents enjoy in the U.S.?

Individuals have the status of U.S. citizens and enjoy the civil rights stipulated in U.S. laws.

The specific form of permanent residence in the United States is to obtain a U.S. permanent resident card through legal means.

The U.S. Permanent Resident Card, also known as the Green Card, is an ID card used to prove that foreigners have permanent resident status in the United States of America. "Obtaining a green card" is used to refer to the immigration process of becoming a permanent resident. Lawful permanent residence for green card holders is an official grant of immigration benefits, including conditional permission to remain and work in the United States. The holder must maintain his or her permanent resident status and may lose it if one of the conditions required for the status is no longer met.

About U.S. nationality, it is often mistakenly thought to be the same as U.S. permanent residence (commonly known as the U.S. green card). In fact, U.S. permanent residence and U.S. nationality are two different concepts. Applying for U.S. citizenship (according to the place of birth) Except for those who automatically acquire U.S. citizenship based on principles such as blood and descent), you must first apply to the immigration agency (Citizenship and Immigration Services) USCIS and legally obtain permanent residency. Then you can apply for naturalization and obtain U.S. citizenship after approval.