Trump's border wall would cost $21.6 billion and would take more than 3 years to build; you pay

According to Reuters, an internal document from the Department of Homeland Security estimates that Donald Trump's border wall would have a price tag of $21.6 billion dollars and it would more than 3 years to build.

On top that, the wall would not even be a full wall but, but a series of fences and walls.

The price tag is nearly twice as high as Trump's campaign estimate of $12 billion dollars (although he originally said it would cost $8 billion).

And the wall would be finished by the end of 2020.

So, do you really want to pay $21 billion of your taxpayer money on a wall you don't need.