The company said it had no comment when an ABC15 reporter entered the building Thursday afternoon. The other three companies selected are Caddell Construction Co. of Montgomery, Alabama; Texas Sterling Construction Co. of Houston; and W.G. Yates & Sons Construction Co. of Philadelphia, Mississippi
CBP is providing few details of the concrete prototypes and says funding for four other prototypes for a see-through structure will be awarded next week. The prototypes will cost a total of $3.6 million and will be built in San Diego.
Trump made the construction of the wall his signature issue in the presidential campaign. He promised that Mexico would pay for it, but Mexico has refused.