The U.S. Border Patrol uses wild mustangs rounded up from the Rockies as it takes its hunt for smugglers into the most rugged terrain on the Arizona-Mexico border. Joshua Lott/Reuters/Landov hide caption

itoggle caption Joshua Lott/Reuters/Landov

Barbara and Norman Roux stand in front of cattle pens on their farm outside of Moundridge, Kan., where she has raised cattle for nearly 70 years. Peggy Lowe/Harvest Public Media hide caption

itoggle caption Peggy Lowe/Harvest Public Media