§ 1101 : DEFINITIONS
In this title:
NORTHERN BORDER.—The term Northern border means the international border between the United States and Canada.
RURAL, HIGH-TRAFFICKED AREAS.—The term rural, high-trafficked areas means rural areas through which drugs and undocumented aliens are routinely smuggled, as designated by the Commissioner of U.S. Customs and Border Protection.
SOUTHERN BORDER.—The term Southern border means the international border between the United States and Mexico.
SOUTHWEST BORDER REGION.—The term Southwest border region means the area in the United States that is within 100 miles of the Southern border.