Surely I am not the only American who has this nagging sense that the Donald Trump administration is continuing to unravel, that it is a ship without a rudder, that the “fine-tuned machine” needs a serious overhaul.

Perhaps it should come at the very top of the chain of command.

The acting homeland security secretary, Kevin McAleenan, is calling it quits. Think of this for a moment: At the time when the president wants to crack down on illegal border crossings, trying to secure the “homeland” against evil doers intent on harming us, the guy charged with running the department is bailing.

Sure, the president said some nice things about McAleenan, who inherited the “acting” gig upon the (forced) resignation of Kirsteijn Nielsen. Then again, he often does even when he doesn’t mean it. McAleenan reportedly had been clashing with other senior Trump administration officials, perhaps even with the president himself, over policy matters.

So now the latest acting Cabinet secretary is hitting the road.

There are damn near too many acting secretaries and senior agency heads to count. We do have an acting White House chief of staff, Mick Mulvaney, who’s basically taken a powder while the president struggles against the rising tide of evidence that is likely to lead to his impeachment.

But what the heck. Trump has said he likes having all these acting secretaries and senior agency bosses. It gives him “flexibility” in enacting policy pronouncements that pour forth from his Twitter account.

Whatever that’s supposed to mean.

So now the individual charged with protecting our “homeland” is gone. Who’s next, and when will that fine-tuned machine start functioning as one?

I don’t know the answer to the first part of the question. The second part? The executive branch of government will right itself when we get a new president of the United States.