To cross into the United States from Mexico, some people make their own welded ladders. But new prototypes of the border’s wall are over 30 feet tall.

To cross into the United States from Mexico, some people make their own welded ladders. But new prototypes of the border’s wall are over 30 feet tall. Could this stop people from trying to climb over? @JacobSoboroff reports on an all-new #Dateline tonight at 7/6c. pic.twitter.com/hiyGKkpwie

— Dateline NBC (@DatelineNBC) June 24, 2018