Early Immigrant Inspection Along the US/Mexican Border
Before the late 19th century, U.S. immigration laws primarily focused on European and Asian arrivals via seaports, with limited attention to land borders. The Immigration Act of 1891 allowed for some inspections along the U.S.-Mexican Border but focused chiefly on maritime entries. By 1906, systematic inspections began at southern ports with an emphasis on enforcing Chinese exclusion laws. However, many Mexican immigrants entered without formal records, complicating statistics and highlighting a growing divide between legitimate and illegitimate entries, necessitating increased inspection efforts.