Form I-821 is a document used by individuals applying for Temporary Protected Status (TPS) in the United States. TPS is a humanitarian program that allows eligible individuals from designated countries experiencing ongoing conflict, environmental disasters, or other extraordinary conditions to live and work in the U.S. temporarily. The form collects personal information, including the applicant's name, address, and country of origin. It also requires details about the applicant's eligibility for TPS. Once completed, Form I-821 must be submitted to the U.S. Citizenship and Immigration Services (USCIS) along with any required fees and supporting documents.