He built a privately funded border wall. It's already at risk of falling down if not fixed.

 https://www.texastribune.org/2020/07/02/texas-border-wall-private/

 Trump supporters funded a private border wall on the banks of the Rio Grande, helping the builder secure $1.7 billion in federal contracts. Now the "Lamborghini” of border walls is in danger of falling into the river if nothing is done, experts say.

 Tommy Fisher billed his new privately funded border wall as the future of deterrence, a quick-to-build steel fortress that spans 3 miles in one of the busiest Border Patrol sectors.

Unlike a generation of wall builders before him, he said he figured out how to build a structure directly on the banks of the Rio Grande, a risky but potentially game-changing step when it came to the nation’s border wall system.

Fisher has leveraged his self-described “Lamborghini” of walls to win more than $1.7 billion worth of federal contracts in Arizona.

 But his showcase piece is showing signs of runoff erosion and, if it’s not fixed, could be in danger of falling into the Rio Grande, according to engineers and hydrologists who reviewed photos of the wall for ProPublica and The Texas Tribune. It never should have been built so close to the river, they say.

 Fisher’s success and the $1.3 billion contract in Arizona he won in May — the largest border wall contract ever awarded — came despite repeated questions about his qualifications and work. Army Corps of Engineers officials have said the firm won because it submitted the lowest bid.

Fisher’s strategy was years in the making. Soon after the 2016 election, he became a frequent guest on Fox News, where he caught the attention of Trump. Last year, The Washington Post reported that the president “latch(ed) on” to Fisher’s claims of speed and quality and “aggressively pushed” for the firm in conversations with top Homeland Security officials.