United States Border Patrol

Texas Rangers were also sporadically assigned to patrol duties by the state, and their efforts were noted as "singularly effective". The National Origins Act authorized the formation of the U.S. Border Patrol on May 26, 1924. Two days later, the Labor Appropriation Act of 1924 established the Border Patrol as an agency of the U.S. Department of Labor assigned to prevent illegal entries—primarily along the Mexico–United States border, as well as the Canada–U.S.