Customs officials are government employees responsible for monitoring and regulating the flow of goods and people across international borders. They ensure that all items entering or leaving a country comply with laws and regulations, including tariffs and import/export restrictions. Their duties include inspecting luggage, cargo, and vehicles to prevent smuggling and illegal activities. These officials also collect duties and taxes on imported goods, which helps fund government services. They play a crucial role in maintaining national security and protecting the economy by enforcing laws related to trade, such as those concerning contraband and intellectual property.