An undocumented immigrant is a person who enters or resides in a country without legal permission or proper documentation. This can happen when someone crosses a border without going through official checkpoints or overstays a visa. These individuals often seek better opportunities, safety, or family reunification. Undocumented immigrants may face various challenges, including limited access to healthcare, education, and employment. They often live in fear of deportation and may not have the same legal protections as citizens or lawful residents. The topic of undocumented immigration is complex and involves social, economic, and political factors that vary by country.