Two collared peccary, commonly known as javelina, were spotted near a border wall segment in Arizona's San Pedro Riparian National Conservation Area, a U.N. World Natural Heritage Area. Photo by Krista Schlyer, International League of Conservation Photographers (ILCP)
A horned lizard's movements are influenced by the border wall in the San Pedro Riparian National Conservation Area.
An access road winds through the formerly roadless Otay Mountain Wilderness Area in California. The road was built in 2009 to aid border wall construction.Photo by Roy Toft, ILCP and Lighthawk
A mountain lion's path is blocked at Arizona's Buenos Aires National Wildlife Refuge.Photo by the U.S. Border Patrol
A rattlesnake encounters the border wall in the San Pedro Riparian National Conservation Area.Photo by Dan Millis
During a July 2008 storm, a concrete section of the border wall blocked a drainage path, exacerbating flood damage in the city of Nogales, Sonora. Photos by CBP
The movements of deer are impeded by the border wall in the San Pedro Riparian National Conservation Area.Photo by Dan Millis