Hoover Dam, Lake Mead Recreation Area, Arizona, Nevada, USA, North America

A U. S. Border Patrol surveillance tower at the international border between the United States and Mexico, San Ysidro, California, USA, North America

The Border Patrol's new fence between the United States and Mexico, which has been repeatedly patched after holes were cut in it, San Ysidro, California, USA, North America

The U. S. Border Patrol's "Surf Fence Project" extends the border fence between the United States and Mexico further into the Pacific Ocean, San Ysidro, California, USA, North America

The U. S. Border Patrol's "Surf Fence Project" extends the border fence between the United States and Mexico further into the Pacific Ocean, San Ysidro, California, USA, North America

A U. S. Border Patrol employee patches a hole that has been cut in the fence along the international border between the United States and Mexico, San Ysidro, California, USA, North America

Glen Canyon Dam, Lake Powell Dam, Arizona, USA, North America

U. S. Border Patrol agent Joe Velasquez in the area between the old and new border fences between the United States and Mexico, Tijuana neighborhood across the old fence at left, San Ysidro, California, USA, North America

The international border crossing to Sonoyta, Sonora, Mexico, in Lukeville, Arizona, USA, North America

Construction workers build a new pedestrian border crossing between San Ysidro, California, USA, and Tijuana, Mexico, North America

"Hoover Dam, on the border between the US states of Nevada and Arizona, United States of America, USA"