The scale of the graft is decidedly off the charts, but the revelation that Donald Trump raked in a personal fortune of $2.2bn during his first year in office should come as no surprise. The president didn’t even try to hide his venality. Not only did he refuse to sell businesses and put assets in a blind trust, as other presidents have done to limit opportunities for self-dealing; the quid pro quos with foreign governments and assorted magnates were exposed for all to see.

It is troubling that the president of the United States would so nonchalantly deploy his official powers to profit from dealings with money launderers and Middle Eastern princes. It is perhaps more so that the supposedly robust checks and balances upholding American…