but according to the washington post , experts put the estimate closer to at least $ 25 billion .
” and then there ’s the fact that the 30 - foot wall on the mexico - us border — a big , beautiful wall , of course .
while trump has estimated the wall that the republican presidential candidate wants to build to separate mexico and the united states in order to curtail illegal immigration .
while the proposal has made a great talking point for trump , it has also drawn a lot of well - deserved criticism — and on sunday night ’s episode of last week tonight , john oliver delivered what might be the most thorough takedown yet .
and while trump insists mexico will pay for the wall , there is zero evidence for that : if there ’s one policy proposal donald trump has outlined in great detail , it ’s his idea to build a wall along the border between the united states and mexico — and , of course , to make mexico pay for it .
“ it ’s like getting a pet walrus , ” oliver put aside the obvious racism implied by such a plan and instead tackled the absurdity of the plan itself — highlighting its rising proposed costs , the silliness of believing mexico would pay for it ( even as mexican officials insist they would not ) , and the practical complications of actually building the wall itself .
and while trump insists mexico will pay for the wall , there is zero evidence for that : mexican officials have flat - out rejected the idea .
trump has at varying times estimated that the wall will cost anywhere from $ 4 billion to $ 12 billion .
and while this idea may sound inherently ridiculous to a lot of people , trump is very serious about it .