"Thankfully, engineer Ali F. Rhuzkan already provided material estimates for the wall. I simply took his material estimates, found national average costs, and totaled them up. Let’s break it down step by step. The previous calculations stated that the wall will be built using pre-cast (place and set at indoor facility and transport harden concrete panels to job site) and cast-in-place (wet concrete placed at site) concrete. We will also need to include the steel rebar in the material costs.
Going off of materials estimate we have…
167,272,000 cubic yards of cast-in-place concrete at $93/cubic yard = $15,556,296,000
1,030,000 segments of 10’ pre-cast panels at $17/panel = $17,510,000
2,500,000 tons of steel rebar at $600/ton = $1,500,000,000
Total Material Cost Estimate: $17,073,806,000
$17 Billion!! To give you a mild idea of how much that is, $17 billion is roughly NASA's yearly operating budget. And let’s take a reality check for a moment: this is only a rough materials costs for the project. I haven’t yet taken into account the cost of labor or machinery, not to mention the millions of dollars it would cost for design work, surveying, and land acquisition. If I had an RSmeans book (construction estimating tool) handy I would be able to do a more in depths cost estimate of this Wall."
http://imgur.com/gallery/KVdSb
Total foreign aid to Mexico in 2013 = $560 million
That's about $16.4 billion short (not including labor costs)
So to answer the question; no, obviously not, there are no smart Trump supporters