Donald John Trump Sr.’ s “fine-tuned machine” has hit another pot hole.

It has opened up in the Department of Justice. The attorney general, Jeff Sessions, is now getting skewered by foes on both sides of the political divide.

Democrats detest Sessions mostly for partisan reasons; now even some Republicans are turning on him. Some of them dislike his recusal from the Russian 2016 election meddling investigation, which led to the appointment of special counsel Robert Mueller; others dislike him because he rescinded an Obama administration memo that allowed states to determine how to enforce laws governing the use of marijuana.

As The Hill reports: “When you have Republicans calling for you to step down and you’re in a Republican administration just entering your second year, that’s trouble. He’s really on borrowed time,” said Brian Darling, a Republican strategist and former Senate aide.

Donald Trump himself is angry at Sessions. Why? The recusal, that’s why. The president once said that if he’d known Sessions would have recused himself from the Russia probe he would have selected someone else.

Now we hear from the media that Trump sent White House counsel Don McGahn to the DOJ to try to talk Sessions out of recusing himself from the Russia investigation.

All of this is highly unusual. It borders on bizarre. It also speaks — yet again — the disarray that has become the hallmark of Donald Trump’s administration.

He called it a “fine-tuned machine.” It is nothing of the sort. It is a jalopy in need of a top-to-bottom overhaul.