The U.S. Border Patrol seeks to prevent illegal entry into the United States along the 8,000 miles of land and water boundaries of the United States between ports-of-entry.
The southwest border covers four states: California, Arizona, New Mexico, and Texas.
The voluntary returns program allows aliens to enter an agreement to leave the United States of their own volition to avoid further consequences.
|SouthWest Border Apprehensions||May-01||May-02|
|Southwest Border apprehensions||122,927||97,424|
|Percent change from same month previous year||-26.08||-20.75|
|Southwest Border voluntary returns||118,762||92,619|
|Percent change from same month previous year||-27.03||-22.01|
NOTE: The current value is compared to the value from the same period in the previous year to account for seasonality.
SOURCE: U.S. Immigration and Naturalization Service, available at: http://www.ins.gov/graphics/aboutins/statistics/index.htm.