One of the key promises of President Trump's campaign was the building of a huge wall between the US and Mexico.
Tuesday, after months of talk and preparation, contractors broke ground on eight prototypes for the border wall. The different companies vying for the contract have 30 days to complete construction on their prototype in San Diego.
There are 6 contractors from across the country have been selected to build the prototypes, half of which are going to be constructed of concrete and the other half will be made of "other materials".
Estimates for the cost of the border wall have ranged up to $38 billion. The Department of Homeland Security plans to pay for the construction of the prototypes, which cost up to $500,000 each, with funds reallocated internally from other programs.
Once built, they will undergo testing by the Department of Homeland Security.
Currently there is no amount of funding allocated for the building of the wall.