What is another term for the I-551 document?

The I-551 document is commonly known as a Green Card. It serves as proof of lawful permanent residency in the United States, allowing individuals to live and work in the country on a permanent basis. The term "Green Card" reflects the document’s original green color and has become a widely recognized term among immigrants and the general public alike.

While other options may pertain to different aspects of immigration and residency, they do not accurately describe the I-551. For example, a work permit allows individuals to work legally but does not confer permanent resident status. A travel document refers to various forms of documentation used for international travel, while a citizenship certificate is a document issued to those who have completed the naturalization process and are now U.S. citizens. Thus, referring to the I-551 as a Green Card encapsulates its role as a vital part of the immigration process for permanent residents.