The document outlines the green card process in the United States, detailing its significance as a permanent resident identification and the various eligibility categories for applicants, including family sponsorship, employer sponsorship, refugee or asylum-seeker status, and a green card lottery. Each category has specific steps for application, processing times, and required documentation, emphasizing that obtaining a green card is a vital step toward U.S. citizenship, despite being distinct from citizenship itself. Additionally, it highlights that green cards are valid for 10 years and must be renewed upon expiration.