President Donald Trump has repeatedly advocated for a steel slat design for his border wall, which he described as "absolutely critical to border security" in his Oval Office address to the nation Tuesday. But Department of Homeland Security testing of a steel slat prototype proved it could be cut through with a saw, according to a report by DHS.
A photo exclusively obtained by NBC News shows the results of the test after military and Border Patrol personnel were instructed to attempt to destroy the barriers with common tools.
The Trump administration directed the construction of eight steel and concrete prototype walls that were built in Otay Mesa, California, just across the border from Tijuana, Mexico. Trump inspected the prototypes in March 2018. He has now settled on a steel slat, or steel bollard, design for the proposed border barrier additions.