Stuart Anderson, security and immigration adviser to two GOP congressmen: https://www.forbes.com/sites/stuartanderson/2019/01/10/there-is-no-border-crisis/#2f83a5496a52
Some walls work; some don't. This one won't (and, in any case, the southern border is not the source of the majority of undocumented residents, who arrive by plane on tourist visas and then never leave, so even if a wall worked it would do nothing to stop them). Evaluation of the feasibility of this particular wall by a University of Houston faculty member and licensed structural engineer: https://www.facebook.com/apatrick/posts/10100902776405671
Because the now-failed GoFundMe campaign is the topic of my pie charts. If you want to talk about something else, go make an image of your own and wait for people to come talk to you about it.
The grifter who set it up (https://www.nbcnews.com/tech/tech-news/behind-viral-gofundthewall-fundraiser-rising-conservative-star-shadowy-email-harvesting-n957896) changed his statements multiple times, so GoFundMe shut it down and is refunding everyone (https://thehill.com/homenews/administration/424976-20-million-raised-in-gofundme-for-trump-border-wall-will-be-refunded).
I am also personally rather fond of the factlet that between last summer's fundraiser and last month's "Ladder to Get Over the Wall" fundraiser, this thing fell short of donations to RAICES. and the immigrants and refugees it serves by about $2 million.
