The Customs Department is a government agency responsible for regulating the flow of goods into and out of a country. Its main functions include collecting tariffs, enforcing trade laws, and preventing illegal smuggling of items such as drugs and weapons. The department ensures that all imported and exported goods comply with national regulations and safety standards. Additionally, the Customs Department plays a crucial role in protecting the economy by monitoring trade practices and preventing fraud. It works closely with other agencies, such as the Border Patrol and Immigration Services, to maintain national security and facilitate legitimate trade.