After the traumas of Watergate, President Gerald Ford declared "our long national nightmare is over," and in one of America's enlightened appointments, tapped Edward Levi to be Attorney General.

There was no more respected legal figure than Levi, president of the University of Chicago. His appointment and policies sent a clear message: ‘The rule of law and equal justice has been reestablished.’

Following the Trump traumas, there is a different message: ‘The nightmares will get darker — and we're going to get revenge upon our political enemies.’

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Knowing Trump, this is no surprise — despite indications by Republican Senators like Susan Collins Susan Margaret CollinsJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally Momentum growing among Republicans for Supreme Court vote before Election Day MORE (R-Maine) and Lamar Alexander Andrew (Lamar) Lamar AlexanderToobin: McConnell engaging in 'greatest act of hypocrisy in American political history' with Ginsburg replacement vote Chamber of Commerce endorses McSally for reelection Trump health officials grilled over reports of politics in COVID-19 response MORE (R-Tenn.) to justify siding with the president on impeachment, that he might change. Worse is an enabling Attorney General, William Barr Bill BarrMichigan resident puts toilet on front lawn with sign 'Place mail in ballots here' Barr says Ginsburg 'leaves a towering legacy' Republicans call for DOJ to prosecute Netflix executives for releasing 'Cuties' MORE.

Trump has yearned for a legal bulldog akin to his mentor Roy Cohn. Barr seems to be trying to satisfy the president’s wish.

The polar opposite of Levi (who, by the way, philosophically leaned conservative), Barr is administering a justice that goes after Trump's targets — even to the point of buying into loony conspiracy theories — and seeks to help protect shady associates of the president from just punishment.

To be sure, Barr publicly complained that Trump’s tweets have impeded his ability to do the job. Associates have leaked that Barr has considered resigning.

This may be real — but there are no substantive schisms between the president and the attorney general. A more plausible explanation may be that Barr is trying to deliver a simple message: ‘Cool it: I’m doing your bidding, and your tweets make for bad optics.’

The latest episode was the Attorney General overturning the prosecutor's recommended sentencing for Roger Stone Roger Jason StoneOur Constitution is under attack by Attorney General William Barr Justice IG investigating Stone sentencing: report Romney says Trump's protest tweets 'clearly intended to further inflame racial tensions' MORE. The infamous dirty trickster and Trump political confidant was sentenced to 40 months for multiple counts of lying, obstruction of justice and witness tampering. He also insulted the judge.

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After Barr's unusual intervention, the four prosecutors resigned. Why would the Attorney General get involved in a case like this other than to please Trump?

This is hardly isolated.

Barr has tried to buttress Trump's effort to counter the official intelligence determination that Russia interfered in the 2016 presidential election to help the Republicans by focusing instead on a discredited notion that it was the Ukrainians and others who tried to help the Democrats.

Barr even traveled to Europe to inquire about these conspiracy theories, dismissed by American intelligence agencies and outside experts as a crackpot political scam.

He also said he has created an “intake process” for information from Rudy Giuliani Rudy GiulianiGrand jury adds additional counts against Giuliani associates Lev Parnas and and Igor Fruman Juan Williams: Breaking down the debates Giuliani criticizes NYC leadership: 'They're killing this city' MORE, Trump's personal lawyer, who is going after former Vice President Joe Biden Joe BidenMomentum growing among Republicans for Supreme Court vote before Election Day Trump expects to nominate woman to replace Ginsburg next week Video of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral MORE and his son, Hunter, who was on the board of a Ukrainian energy company. But any charges against the former Vice President are baseless, aimed only at undercutting a potential rival in this year's presidential election.

This issue was at the core of Trump's impeachment. The president called the president of Ukraine last summer to pressure him to announce an investigation into phony charges against Biden. Trump suggested two people who could aid Ukraine in this smear: Giuliani and Barr.

The Attorney General has named a U.S. Attorney to look into the origins of the investigation into Russia's efforts to help Trump in the last election — the “investigation of the investigators.” He has appointed another U.S. Attorney to review the conviction of former Trump national security adviser Michael Flynn, who pleaded guilty to lying about his associations with Russians. These are in line with Trump's demands.

Other Trump critics are in Barr's sights. He's also launched an investigation of former FBI director James Comey, fired by Trump and still a target of his rants.

Most outrageous, Barr preempted and misrepresented special counsel Robert Mueller's report on behalf of Trump, suggesting, falsely, that it cleared the president and that there was no case for obstruction.

Barr's defenders point to the recent decision not to prosecute former acting FBI director Andrew McCabe Andrew George McCabeGraham: Comey to testify about FBI's Russia probe, Mueller declined invitation Barr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' GOP votes to authorize subpoenas, depositions in Obama-era probe MORE as proof of Barr’s non-partisanship. Nonsense. The charges against McCabe — leaking to the media stuff about the Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE e-mail probe — were weak, and Justice took two years to resolve it. Any leak investigation could clear out the Trump White House.

More than 1,000 former Justice officials have called on Barr to resign.

Barr is a consistent ideologue, believing in few checks on executive power. But his consistent advocacy for Trump friends in legal trouble and assaults on Trump critics is about politics, not philosophy.

It's the behavior that Edward Levi eliminated at the Department of Justice four and a half decades ago.

In an election year sure to be full of efforts at voter suppression and complaints of illicit voting, don't count on this this Department of Justice to be an impartial arbiter.

Bill Barr is in Donald Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE's corner.

Al Hunt is the former executive editor of Bloomberg News. He previously served as reporter, bureau chief and Washington editor for the Wall Street Journal. For almost a quarter century he wrote a column on politics for The Wall Street Journal, then the International New York Times and Bloomberg View. Follow him on Twitter @AlHuntDC.