The Trump administration is looking for ways to build the wall along the US-Mexico border. The company submitted a design for a wall made of wire and Plexiglass that would work similarly to a one-way mirror. The US side would be able to see through the wall, while the Mexico side would not.
You can read more about it by following the link below:
http://www.businessinsider.com/trump-border-wall-proposal-plexiglass-2017-5