CBP’s top priority is to keep terrorists and their weapons from entering the U.S. while welcoming all legitimate travelers and commerce. CBP officers and agents enforce all applicable U.S. laws, including against illegal immigration, narcotics smuggling and illegal importation. CBP deploys highly trained law enforcement personnel who apprehend more than 1,000 individuals each day for suspected violations of U.S. laws.
CBP’s border security mission is led at ports of entry by CBP officers from the Office of Field Operations, along U.S. borders by agents from the Office of Border Patrol and from the air and sea by agents from the Office of Air and Marine Operations. Also at ports of entry, agriculture specialists are deployed to protect U.S. agriculture from the introduction of pests or disease from overseas sources.
For more information, refer to the U.S. Customs & Border Protection here: https://www.cbp.gov/border-security