Trump's border 'wall' to cost $21.6 bn, take 3.5 years to build: Report

The estimated price-tag is much higher than a $12 bn figure cited by Trump in his campaign

President Donald Trump’s “wall” along the US-Mexico border would be a series of fences and walls that would cost as much as $21.6 billion, and take more than three years to construct, based on a US Department of Homeland Security internal report seen by Reuters on Thursday.

The report’s estimated price-tag is much higher than a $12-billion figure cited by Trump in his campaign and estimates as high as $15 billion from Republican House Speaker Paul Ryan and Senate Majority Leader Mitch McConnell.

The report is expected to be presented to Department of Homeland Security (DHS) Secretary John Kelly in