The US President looks to introduce one of his key campaign promises, Eight prototypes are being examined in San Diego.
The US President says, this will help to solve America's immigration problems. The eight 30ft high slabs are the first tangible part of the controversial project.
8 construction companies were given the chance to produce their example of a wall that would work. Officials from Customs and Border Protection (CBP) are now testing those offerings.
The wall was one of Mr Trump's dominant campaign promises but few believe building it along 2,000 miles of border is realistic or feasible.
However, the CBP, which would have responsibility for the wall, says its existence sends a psychological message.