Immigration officers are government officials responsible for managing the entry and exit of people across national borders. They work at airports, seaports, and land border crossings, ensuring that travelers comply with the laws and regulations of the country. Their duties include checking passports, visas, and other travel documents, as well as conducting interviews to assess the purpose of a visit. These officers play a crucial role in national security by preventing illegal immigration and identifying potential threats. They also help facilitate legitimate travel, ensuring that individuals can move freely while maintaining the safety and integrity of the country's borders.