Let’s look at a case study in Justice Department and news media bias: the treatment of President Trump compared with the treatment of Democratic Sen. Dianne Feinstein of California.

The media was gleeful over news – first reported in The New York Times – that a group of anti-Trump bureaucrats took it upon themselves to investigate President Trump as a traitor. The action, which came when the president fired their friend James Comey as FBI director in May 2017, has only served to clarify the establishment and media hostility toward President Trump.

With no evidence – save some absurd and unsubstantiated opposition research paid for by the Clinton campaign and the Democrats – Obama-era FBI officials are reported to have decided to covertly investigate the newly elected president for what amounts to treason.

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This inquisition was apparently in addition to the counterintelligence investigation over alleged (and undefined) collusion between Trump’s campaign and Russia to supposedly help elect Donald Trump as president.

Consider the FBI’s multilayered attack on Trump compared to its dramatically different treatment of Feinstein after the bureau concluded that her driver and San Francisco office staffer of 20 years had been spying for the Chinese government.

The spying involving Feinstein wasn’t reported by any news media organizations for five years –which meant the FBI didn’t feel the need to leak it. Even when this security breach was reported, it was only mentioned in passing by Politico Magazine in a story published last July 27 about extensive Chinese-espionage in Silicon Valley.

The Politico Magazine story, by Zach Dorfman said: “Former intelligence officials told me that Chinese intelligence once recruited a staff member at a California office of U.S. Senator Dianne Feinstein, and the source reported back to China about local politics.”

Once the story broke, the San Francisco Chronicle picked it up as a local story, but it was ignored by the almost all the rest of the establishment media.

According to the Chronicle story by Phil Matier, published Aug. 1: “A local source who knew about the incident confirmed to us that the FBI showed up at Feinstein’s office in Washington, D.C., about five years ago to alert the then-chairwoman of the Senate Intelligence Committee that her driver was being investigated for possible Chinese spying. “

The Chronicle story added, referring to the accused spy: “‘They interviewed him, and Dianne forced him to retire, and that was the end of it,’ says our source.”

A New York Post op-ed published Aug. 8 on the incident was headlined: “Diane Feinstein was an easy mark for China’s spy.”

Post columnist Paul Sperry wrote: “A Chinese-American who doubled as both an office staffer and Feinstein’s personal driver, the agent reportedly was handled by officials based out of the People’s Republic of China’s consulate in San Francisco, which Feinstein helped set up when she was mayor of that city. He even attended consulate functions for the senator.”

The New York Post op-ed continued: “Feinstein says she took the staffer off her payroll ‘immediately’ after the FBI informed her five years ago that her office had been infiltrated by Chinese intelligence, and agents had identified the mole in a briefing. In a statement, the Democratic senator insisted he had ‘no access to sensitive information’ and that he was never charged with espionage.”

Presumably, American taxpayers are required to pay for the Chinese spy’s retirement – for which the Chinese government is undoubtedly grateful.

Despite all this, there was no investigation into Feinstein colluding with China at all – even though she is widely regarded as a “China dove” in the Senate and even though her husband made millions of dollars in Chinese business dealings while she has served as a top Democrat on Senate committees dealing with intelligence, energy and foreign affairs.

Feinstein’s claim – parroted by many in the media – that her driver was of no importance, didn’t know anything, and posed no threat to our national security was complete baloney.

As a former congressional leader, I can tell you that drivers in congressional offices have nearly complete access to their members’ schedules. They know who you are meeting with, when you are meeting them, and sometimes have a notion of what the meeting is about.

The drivers hear every conversation you have while you are being driven about from place to place – both on the phone and with staffers riding with you. They have access to anything you leave in the car for safe-keeping – think briefcases, notes, laptops, iPads, cellphones, and the like.

Furthermore, as a member of your team, the drivers have access to the rest of your staff. The amount of intelligence a spy embedded in a congressional office could ascertain from simply attending a staff happy hour is astounding.

Even if this staff member had no access to classified information, the political and policy intelligence to which he had access may have put our country at a huge disadvantage in negotiating with or competing with China.

These two contrasting cases of President Trump and Sen. Feinstein clearly show the bias held by both the media and the Washington establishment.

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When well-entrenched Democrats find themselves enmeshed in espionage by our greatest competitor – China – they are briefed and the problem is ignored.

But when the vaguest of allegations is made against a Republican – or any real change agent in Washington – the establishment and media go to war against him or her.