It looks like somebody has been trying for 9-10 months now.
https://www.gofundme.com/hrt8r-build-the-wall
This page is a great start but unless it’s directed through Trump’s megaphone it goes nowhere.
Well in nine months they have raised $2,400. Not much but it’s a start.
At that rate we might get the wall funded in 6,562,500 years.