The United States Customs and Border Protection (CBP) is a federal law agency within the Department of Homeland Security. Among other responsibilities, CBP collects import duties, regulates and facilitates lawful international trade, and enforces various U.S. laws and regulations governing imported and exported goods on its own behalf as well as on the behalf of partner governmental agencies such as FDA, EPA, Fish and Wildlife, etc. In addition, CBP screens imported shipments at the borders for illegal substances, infested produce, and regulatory violations (among other things) in its efforts to combat illegal immigration, weapons and narcotics smuggling, and illegal importation.