Good guess. It's not money well spent. As long as there're ladders, tunnels and smugglers some will always get thru. But to
reduce the number a more practical approach would include beefing up and enforcing the penalties for hiring them. Spend public funds on more high tech equipment, agents, vehicles, helicopters and patrols.
A wall is a simple answer to a complex problem and complexity is something Trump is not equipped understand, much less able to offer real solutions. 'Build The Wall!' is much more useful as a chant to raise the fever of his rally crowds than stopping illegal immigrants. I suppose his new one won't quite be as effective, "Build That Slot Fence!"
"...Two-thirds of Americans disapprove of the Trump administration's practice of taking undocumented immigrant children from their families and putting them in government facilities on US borders, according to a CNN poll conducted by SSRS. Only 28% approve.
But among Republicans, there is majority support for the policy that has resulted in an uptick of children being separated from their families..."
Separating children from their refuge parents as a punishment for attempting to cross the border may be acceptable to the 80% of Repub extremists, but most American's know it's a disgusting policy and not a reflection of American values.
I appreciate your offer for a civilized discussion, but I've beat this subject to death, so you're welcome to have the last word...