A Look at Finished US-Mexico Border Wall Prototypes

Eight U.S.-Mexico border wall prototypes are now finished after about a month of construction near the Otay Mesa border crossing in San Diego.

The prototypes show there’s been some progress on President Trump carrying out his campaign promise of a solid wall stretching the entire U.S.-Mexico border.

Reuters reports U.S. Border Patrol officials say current infrastructure is over two decades old and there’s an absolute need for improvement.

NBC News reports all of the prototypes are between 18 and 30 feet high -- four of the prototypes are made from concrete, the other four are made out of non-concrete materials. Two of the prototypes have see-through designs, which may address environmentalists' concerns over a solid wall preventing wildlife from crossing.

There’s still no word on who will be paying for the wall if it is built.