U.S. Customs and Border Protection, which includes the Border Patrol, has relatively few officers assigned to enforcement of its own conduct standards. With 48,000 armed officers and 255 officers assigned to internal misconduct and corruption cases, the agency has one investigator for every 188 front-line officers. The ratio in New York City's police department (with 36,000 officers) is one for every 65 officers.
Using that force and the FBI as yardsticks, a 2014 review recommended CBP field at least 550 investigators, warning that "corruption is the Achilles' heel of border agencies."
CBP, the U.S.'s largest law-enforcement agency, was created in 2003 as part of the new Department of Homeland Security.