As House Democrats begin the public phase of their impeachment hearings into President Donald Trump this week — over a presidential phone call to Ukraine — I'm forced to use a dirty word. If you melt easily, please cover your eyes and ears, or clutch your pearls and gird yourself. Here comes that dirty word: Fairness.

To a politician, "fairness" is nothing more than a shiv, to be slipped between the ribs with a smile. Politics is never fair. It's not about who deserves what. Politics is the hand, and government is the club in that hand.

Americans are realists. What keeps us going isn't belief in the fairness of Washington media or Washington politicians. What keeps us going is our belief in the ultimate fairness of our fellow Americans. If we lose that, we're done.

So, I propose that, if nothing else, fairness should rule the televised impeachment hearings run by the chairman of the House Intelligence Committee, Rep. Adam Schiff, D-Calif. He wants to call diplomats to testify about the phone call, to give their impressions of the call, though the transcripts have been released and anyone can read them. Calling the diplomats in isn't about beginning at the beginning.

It begins with the "whistleblower."

If the Democrats want to be fair, two witnesses must be called and sworn in under oath to testify and be questioned by Democrats and Republicans so that Americans, now focused, can also begin at the beginning.

The first witness should be the so-called "whistleblower," the government employee who brought the complaint to Schiff about that phone call to Ukraine.

The second witness should be Schiff.

There is no way, really, around this. To do otherwise is to admit that all this is about is overturning Trump's 2016 election, which caused the bipartisan Washington establishment to break out into hives and TV news anchors to cry on air.

It was the "whistleblower" who brought the complaint to Schiff and his committee staff, alleging that Trump had committed an outrage during that phone call to the president of Ukraine. Is this whistleblower a heroic patriot fighting against overwhelming odds to save the republic, as Democrats insist, or is he a Democratic operative and pajama-boy tool of former CIA boss and Trump loather John Brennan, as Republicans have alleged?

Who is he? What's his name? Does he have allies on Schiff's committee? Why is he doing this? When you hold hearings to take out a president, you want to know how it all began, don't you?

You might want to read the fascinating and important piece in RealClearInvestigations by Paul Sperry. It discusses the "whistleblower" in detail.

If you don't want to read it, then please just admit that all you want is just another steaming platter of "Orange Man Bad" analysis.

After the whistleblower is questioned about Brennan and who he met in Schiff's committee and whether he was indeed booted out of the White House for partisan leaking, as alleged in the RealClearInvestigations story, then Schiff should take the stand.

Schiff should testify, under oath, about how all this was orchestrated and what he did and whether he told the whole truth.

If the whistleblower is not compelled to testify under oath, Democrats risk a self-inflicted wound. And wounds become dangerous when infected in a swamp.

Trump's call to Ukraine was clumsy, and it gave his opponents an opportunity. I don't think it was impeachable, but then, you might differ with me. That's OK. (It's still OK to have different views in this country, isn't it?)

Democrats insist Trump was involved in an illicit effort to use American foreign aid to get Ukraine to dig up dirt about Democratic presidential candidate former Vice President Joe Biden and his son Hunter. They shout "quid pro quo."

Republicans insist there is nothing impeachable in the call and that all foreign aid, by definition, is about a this for a that. They note that Democrats were playing in Ukraine in 2016, and that Joe Biden was America's diplomatic point man in that country, even as son Hunter cashed in with a $50,000-a-month gig with a Ukrainian natural gas company.

That's quid pro quo too, isn't it?

But all that will come at us from Washington began with the whistleblower and Schiff pulling the strings. To pretend otherwise is an insult.

Some of you will think that America doesn't deserve what's happening. But think again.

In the great Western "Unforgiven," Clint Eastwood's character explained the facts of life this way: “Deserve's got nothing to do with it."

The impeachment hearings aren't about what America deserves. This is about what it's always been about: power.

John Kass is a columnist for the Tribune Content Agency.