Donald Trump did not — and does not — recognize any distinction between himself and the office of the presidency. He is it and it is him.

This view is as close a fundamental rejection of American constitutionalism as you can imagine — and it helps explain much of the former president’s behavior in and out of office. It is why he could not abide any opposition to anything he tried to pursue, why he raged against the “deep state,” why he strained against every limit on his authority, why he rejected the very idea that he could lose the 2020 presidential election and why he decided he could simply take classified documents to his home in Florida.

For Trump, he is the president. He is the government. The documents, in his mind, belonged to him.

What this means in practical terms is that as Trump runs for president, he has promised to bring key parts of the federal government under his control as soon as he takes office. He wants to clear out as much of the executive branch as possible and swap professionals for true believers — a new crop of officials whose chief loyalty is to the power and authority of Donald Trump, rather than their office or the letter of the law. And in particular, Trump wants to clear house at the Department of Justice, which is investigating him for mishandling those documents.

Trump cannot tolerate the existence of an independent Justice Department, and so, if made president again, he’ll simply put it under his thumb.

Obviously, if it is a preoccupation for Trump, it is a preoccupation for the Republican Party. And in addition to covering for the former president in the face of federal charges, the other Republicans vying for the nomination have adopted his view that the independence of federal law enforcement violates his (and potentially their) authority as president.

Ron DeSantis — whose tight grip on the operations of government has been a hallmark of his tenure as governor of Florida — made his distaste for an independent law enforcement apparatus clear in a set of recent comments. “I think presidents have bought into this canard that they’re independent, and that’s one of the reasons why they’ve accumulated so much power over the years,” he said of the Justice Department. “We will use the lawful authority that we have.”

Former Vice President Mike Pence has promised to “clean house at the highest levels of the Justice Department” if elected president. “Lady Justice is blind,” Pence said in an interview on NBC’s “Meet the Press.” “And there are tens of millions of Americans who have reason to believe that the blinders have been taken off and that we haven’t seen equal treatment under the law.”

Senator Tim Scott of South Carolina has said, similarly, that if elected president, he will “clean out the political appointments in the Department of Justice to restore confidence and integrity in the D.O.J.”

As to what ends? It is not hard to imagine a world where a second-term President Trump orders a newly purged and reconstituted Justice Department to investigate any group or individual that happens to be a target of MAGA rage, whether they broke the law or not.

Trump has upended nearly half a century of tradition with his contempt for the idea that law enforcement ought to remain separate and independent of the White House. But his actions grow naturally from an increasingly vocal faction within the conservative movement, as well as reflect a key change in the nature and composition of the Republican coalition.

With regard to the former, there is the recent enthusiasm among so-called nationalist or populist conservatives for using the state to enforce a particular social order. And with regard to the latter, there is the way that, influenced by Trump, the Republican Party has begun to take on the values and attitudes of the small-time capitalist and the family firm.

Of course, business owners have always been a critical part of state and local Republican politics. The nation’s state legislatures and county boards of supervisors are full of the proprietors of family-owned car dealerships, fast food franchises, construction companies, landscaping businesses and regional distribution firms. And in fact, many of the most visible and important families in conservative politics have their own family firms, albeit supersized ones: the Kochs, the DeVoses, the Crows and the Trumps.

Among the elements that distinguish this closely held model of ownership from that of, say, a multinational corporation is the degree to which the business is understood to be an extension of the business owner, who appears to exercise total authority over the place of production, except in cases where the employees have a union (one of the many reasons members of this class are often intensely and exceptionally anti-labor).

If the nature of our work shapes our values — if the habits of mind we cultivate on the job extend to our lives beyond it — then someone in a position of total control over a closely held business like, say, the Trump empire might bring those attitudes, those same habits and pathologies, to political office.

Donald Trump certainly did, and as the Republican Party has come to shape itself around his person, it has also adopted his worldview, which is to say, the worldview and ideology of the boss. No longer content to run government for business, the Republican Party now hopes to run government as a business.

But this doesn’t mean greater efficiency or responsiveness or whatever else most people (mistakenly) associate with private industry. It means, instead, government as the fief of a small-business tyrant.

The next Republican president, in short, will almost certainly be the worst boss you, and American democracy, have ever had.