Established in 1972, the University of Texas at El Paso (UTEP) Institute of Oral History (IOH) holds the largest collection of border-related oral histories in the United States. Containing interviews dating back to the 1960s, the collection is particularly strong with themes related to labor, immigration, the Bracero Program, and the Mexican Revolution. This article explores the history of the U.S. Border Patrol as gleaned from UTEP oral histories. El Paso and the Border Patrol have a very long and complicated history. The first officers were stationed in El Paso and the first training academy was there. Today, the presence of the Border Patrol is ubiquitous. Using the collection, we investigate what oral histories can tell us that official government documents cannot. How did Border Patrol officers feel about their work and about the people they encountered trying to enter the United States? How did the day-to-day work of Border Patrol officers change over time while the mission of the agency “to detect and prevent the illegal entry of individuals into the United States” remained the same? The article also sheds light on the response of migrants and immigration advocates to the work of the Border Patrol.