A permanent resident card, often referred to as a green card, is an official document issued by a country's government that allows a non-citizen to live and work permanently in that country. It serves as proof of a person's legal status and grants them various rights, including access to certain public benefits. To obtain a permanent resident card, individuals typically must meet specific eligibility criteria, such as family sponsorship, employment opportunities, or refugee status. The card must be renewed periodically, and holders may eventually apply for citizenship if they meet additional requirements.