Border patrols are government agencies responsible for monitoring and securing national borders. Their main duties include preventing illegal immigration, smuggling, and trafficking across borders. They use various methods, such as surveillance technology and patrols, to ensure safety and enforce immigration laws. In many countries, including the United States, border patrols work closely with other law enforcement agencies to maintain security. They often conduct inspections at border crossings and may apprehend individuals who attempt to cross borders unlawfully. The effectiveness of border patrols is a topic of ongoing debate regarding immigration policy and national security.