The Wall A part of the current U.S.-Mexico border fence in the desert between Yuma, Ariz., and Calexico, Calif. Mexican drug cartels have built tunnels beneath it. The area is heavily patrolled, but (im)migrants have found ways over and through it. Credit David McNew/Getty Images The Wall ‘Can I jump?’ Palestinian artist at Mexico/US border – video The Wall documentary What History Teaches Us About Walls