As opposed to the costs of letting in illegals?
"As opposed to the costs of letting in illegals?"
The illegals are likely to be the only source of sober, ontime, productive labor that can actually build your proposed wall within a reasonable price tag.
Look, all I am pointing out is that any solution is going to cost money--and the Congresscritters spouting off on the subject are the very same who have voted to not spend the money needed.