BORDER ISSUES

Inside a tunnel on the U.S.-Mexico border

In this March 6, 2017, photo, a member of the Border Patrol's Border Tunnel Entry Team walks in a tunnel in San Diego that spans the border between the California city and Tijuana, Mexico. Team members are known in the Border Patrol as "tunnel rats" — agents who go in the clandestine passages that have proliferated on the U.S.-Mexico border over the last 20 years to smuggle drugs.
In this March 6, 2017, photo, a member of the Border Patrol's Border Tunnel Entry Team walks in a tunnel in San Diego that spans the border between the California city and Tijuana, Mexico. Team members are known in the Border Patrol as "tunnel rats" — agents who go in the clandestine passages that have proliferated on the U.S.-Mexico border over the last 20 years to smuggle drugs.
Associated Press
A member of the Border Patrol's Border Tunnel Entry Team looks up as he descends an entrance carved out by the Border Patrol leading to a tunnel spanning the border between San Diego and Tijuana, Mexico. Authorities have discovered more than 200 cross-border tunnels originating in Mexico since 1990, most of which entered the United States.
A member of the Border Patrol's Border Tunnel Entry Team looks up as he descends an entrance carved out by the Border Patrol leading to a tunnel spanning the border between San Diego and Tijuana, Mexico. Authorities have discovered more than 200 cross-border tunnels originating in Mexico since 1990, most of which entered the United States.
Associated Press
A member of the Border Patrol's Border Tunnel Entry Team lowers a cable into a tunnel entrance in between two border barriers separating San Diego and Tijuana, Mexico. Authorities have discovered more than 200 cross-border tunnels originating in Mexico since 1990, most of which entered the United States. Many are shallow holes but some are elaborately constructed with hydraulic lifts, water pumps and rail cars.
A member of the Border Patrol's Border Tunnel Entry Team lowers a cable into a tunnel entrance in between two border barriers separating San Diego and Tijuana, Mexico. Authorities have discovered more than 200 cross-border tunnels originating in Mexico since 1990, most of which entered the United States. Many are shallow holes but some are elaborately constructed with hydraulic lifts, water pumps and rail cars.
Associated Press
Members of the Border Patrol's Border Tunnel Entry Team work in a tunnel spanning the border between San Diego and Tijuana, Mexico. Above, a ventilation shaft created by the Border Patrol reaches to the surface.
Members of the Border Patrol's Border Tunnel Entry Team work in a tunnel spanning the border between San Diego and Tijuana, Mexico. Above, a ventilation shaft created by the Border Patrol reaches to the surface.
Associated Press
A member of the Border Patrol's Border Tunnel Entry Team looks on from a tunnel entrance in between two border barriers separating San Diego and Tijuana, Mexico.
A member of the Border Patrol's Border Tunnel Entry Team looks on from a tunnel entrance in between two border barriers separating San Diego and Tijuana, Mexico.
Associated Press
A member of the Border Tunnel Entry Team ascends an entrance carved out by the Border Patrol leading to a tunnel spanning the border between San Diego and Tijuana, Mexico.
A member of the Border Tunnel Entry Team ascends an entrance carved out by the Border Patrol leading to a tunnel spanning the border between San Diego and Tijuana, Mexico.
Associated Press
A member of the Border Patrol's Border Tunnel Entry Team enters a tunnel spanning the border between San Diego and Tijuana, Mexico.
A member of the Border Patrol's Border Tunnel Entry Team enters a tunnel spanning the border between San Diego and Tijuana, Mexico.
Associated Press
A member of the Border Tunnel Entry Team ascends an entrance carved out by the Border Patrol leading to a tunnel spanning the border between San Diego and Tijuana, Mexico.
A member of the Border Tunnel Entry Team ascends an entrance carved out by the Border Patrol leading to a tunnel spanning the border between San Diego and Tijuana, Mexico.
Associated Press
Members of the Border Patrol's Border Tunnel Entry Team work in San Diego near a tunnel entrance in between two border barriers separating the California city and Tijuana, Mexico.
Members of the Border Patrol's Border Tunnel Entry Team work in San Diego near a tunnel entrance in between two border barriers separating the California city and Tijuana, Mexico.
Associated Press