The Trump administration has awarded contracts to four companies to build concrete prototypes for a border wall between Mexico and the United States, marking a significant move towards fulfilling President Trump’s much-touted promise to curb immigration between the two countries.

The four companies, announced by US Customs and Border Protection (CBP) in a press conference yesterday, are Caddell Construction of Montgomery, Alabama; Fisher Sand & Gravel/DBA Fisher Industries of Tempe, Arizona; Texas Sterling Construction of Houston; and W.G. Yates & Sons Construction of Philadelphia, Mississippi. Designed to “deter illegal crossings,” the concrete prototypes must be between 18–30 feet high and span 30 feet; each will cost between $400,000 and $500,000. The CBP has reallocated the money from other programs, according to the New York Times. 

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