Customs officials are governmental agents responsible for enforcing regulations related to the import and export of goods. They ensure the compliance of trade laws, prevent illegal activities such as smuggling, and collect revenue on behalf of the government. There are several synonyms for customs officials, including customs agents, border officers, immigration officers, revenue officers, and tariff inspectors. In addition, some countries have specific titles for their customs officials, such as the U.S. Customs and Border Protection Officers. Though the job requirements and responsibilities may differ depending on the country, the primary duty of customs officials is to safeguard their nation's economy and security by ensuring that no unauthorized items enter or leave the country.