Five months ago, an engineer and writer under the pen name Ali F. Rhuzkan wrote a rebuttal to Donald Trump’s breezy view of surgically separating the United States and Mexico via a 2,000-mile-long super wall. Ali pointed out that Trump’s wall would require three times as much concrete as the Hoover Dam, 5 billion pounds of steel, and a logistical effort to ship materials and coordinate laborers that would make Qin Shi Huangdi blush.
Trump later amended his ridiculous proposal to 1,000 miles, accounting for “natural barriers.”
On Tuesday, in an interview with MSNBC, Trump estimated the wall project at $8 billion, a figure that the Washington Post‘s Glenn Kessler wrote yesterday was just about the farthest thing from realistic:
We can also look at the Israel’s experience with building a separation barrier between Israeli-held areas and Palestinian-held areas.