UPDATE Feb. 11 at 10:05am | Donald Trump Saturday morning responded to reports that his border will would actually cost almost double the cost he quoted earlier.
Trump tweeted: "I am reading that the great border WALL will cost more than the government originally thought, but I have not gotten involved in the design or negotiations yet. When I do, just like with the F-35 FighterJet or the Air Force One Program, price will come WAY DOWN!"
I am reading that the great border WALL will cost more than the government originally thought, but I have not gotten involved in the.....— Donald J. Trump (@realDonaldTrump) February 11, 2017
Here are President Trump's tweets...
...design or negotiations yet. When I do, just like with the F-35 FighterJet or the Air Force One Program, price will come WAY DOWN!— Donald J. Trump (@realDonaldTrump) February 11, 2017
It developed into a sort of mantra at his concert-like rallies. "Build that wall, build that wall" echoed throughout the crowds.
That wall, according to a US Department of Homeland Security internal report, would cost an estimated $21.6 billion and take more than three years to construct--significantly different than the $12 billion price tag cited by Trump throughout the campaign.
Newly-confirmed Department of Homeland Security Secretary John Kelly is expected to present the finding's of the report, though the administration is not obliged to take the actions that the federal agency recommends.
The report also allegedly details the three phases of the wall's construction, which could stand by the end of 2020. The first phase would be the smallest, covering just 26 miles near San Diego, CA, El Paso, TX, and in Texas' Rio Grande Valley.
The remaining phases of the construction could prove problematic since it would involve intruding on privately owned land or area that's inaccessible by road.
The report--which remains unconfirmed by a DHS spokesperson--assumes Congress would receive the funding by April or May with construction beginning in September 2017.
Trump said Congress should upfront the wall's bill, but that Mexico will reimburse US taxpayers. In late January, White House spokesperson Sean Spicer floated the idea of implementing a 20 percent tax on Mexican imports.