Is it fair to ask whether Donald John Trump Sr. can be judged the worst president in U.S. history?

Events of just the past few days suggest he is making a run at being called The Worst Ever.

He cannot make up his mind. For instance, just in the past couple of days, the president:

• Has declared his intention to push for immediate repeal of the Affordable Care Act and then has changed his mind, saying he intends to wait until after the next presidential election.
•  Vowed to shut down the U.S. border with Mexico and then decided to back off, citing Mexico’s efforts to stem the tide of migrants coming through that country en route to this country.

That’s just two matters. They are so illustrative of the way this man governs. He issues policy pronouncements via Twitter, bypassing “the best people” he vowed to hire. He confounds allies, key aides, senators and House members, Cabinet officers, everyone.

He has made a hash of our international alliances.

Trump has burned through multiple Cabinet members in just the first half of his four-year term. He cannot fill critical posts.

The president trashes Americans who live in a severely damaged U.S. territory, Puerto Rico.

And then . . .

We have this Russia stuff. He cozies up to the Russian dictator and refuses to acknowledge that the dictator’s government has interfered in our electoral system.

He hails the exploits of dictators, disparages the work of U.S. intelligence officials. Trump vows that he “likes” a North Korean tyrant who starves his people.

My goodness, I have just scratched the surface.

The nation has elected a bunch of doozies during its 200-plus years of existence. James Buchanan is generally regarded as the worst president in history. My money, though, goes to William Henry Harrison, who caught pneumonia in Inauguration Day, 1841, was bed-ridden for a month and then died.

Donald Trump, through his series of unbelievable and astonishing missteps, gaffes, broken promises, insults and feuds is mounting a serious bid to become the worst U.S. president in history.

Stand tall, Mr. President.