A Green Card is an official document issued by the United States government that grants a non-citizen the right to live and work permanently in the U.S. It serves as proof of lawful permanent residency and allows holders to enjoy many benefits, such as access to education and healthcare. To obtain a Green Card, individuals typically need to go through a specific application process, which may include sponsorship by a family member or employer, or qualifying through refugee or asylum status. Once granted, a Green Card must be renewed every ten years to maintain its validity.