President Donald Trump sent a wild letter to House Speaker Nancy Pelosi airing out his grievances on the eve of his likely impeachment by the Democratic-controlled House of Representatives.

"This impeachment represents an unprecedented and unconstitutional abuse of power by Democrat Lawmakers, unequaled in nearly two and a half centuries of American legislative history," the letter said. "You have cheapened the importance of the very ugly word, impeachment!"

"More due process was afforded to those accused in the Salem Witch Trials," the president added, referring to the five women who were executed after being accused of witchcraft.

Virtually all of Trump's claims in the letter were inaccurate or misleading. Scroll down to read what Trump wrote and how it stacks up with reality.

Visit Business Insider's homepage for more stories.

President Donald Trump sent a freewheeling letter to House Speaker Nancy Pelosi on Tuesday — the eve of his likely impeachment by the House of Representatives — in which he rattled off a slew of grievances against congressional Democrats. Virtually all of his claims were inaccurate or misleading.

"This impeachment represents an unprecedented and unconstitutional abuse of power by Democrat Lawmakers, unequaled in nearly two and a half centuries of American legislative history," the letter said. "You have cheapened the importance of the very ugly word, impeachment!"

"By proceeding with your invalid impeachment, you are violating your oaths of office, you are breaking your allegiance to the Constitution, and you are declaring open war on American Democracy," Trump added. (Under the Constitution, the House of Representatives has the "sole power" to impeach the president.)

"More due process was afforded to those accused in the Salem Witch Trials," Trump wrote. (Five women were executed as a result of the Salem witch trials.)

Trump also accused Pelosi and other Democratic lawmakers of "bringing pain and suffering to our Republic for your own selfish personal, political, and partisan gain" and "turning a policy disagreement between two branches of government into an impeachable offense — it is no more legitimate than the Executive Branch charging members of Congress with crimes for the lawful exercise of legislative power."

(Trump is accused of abusing the power of his office to solicit foreign interference in the 2020 election, which is against US law. While doing so, the president held up a vital military-aid package to Ukraine, whose interference he sought, and withheld a White House meeting that Ukrainian President Volodymyr Zelensky desperately wanted.)

House Speaker Nancy Pelosi. Scott J. Applewhite/AP

Trump wrote that the first article of impeachment against him, which charges him with abuse of power, "is a completely disingenuous, meritless, and baseless invention of your imagination."

He added: "You know that I had a totally innocent conversation with the President of Ukraine. I then had a second conversation that has been misquoted, mischaracterized, and fraudulently misrepresented. Fortunately, there was a transcript of the conversation taken, and you know from the transcript (which was immediately made available) that the paragraph in question was perfect."

(A White House summary of the phone call, as well as a whistleblower complaint detailing its contents, shows Trump repeatedly pressuring Zelensky to investigate his political rival former Vice President Joe Biden and a bogus conspiracy theory suggesting Ukraine meddled in the 2016 election. Multiple witnesses who testified in the impeachment inquiry said they found the call inappropriate and unusual.)

"There is nothing I would rather do than stop referring to your party as the Do-Nothing Democrats," Trump wrote. "Unfortunately, I don't know what you will ever give me the chance to do so."

(The Washington Post reported that the Democratic-led House has been more productive than the Republican-led Senate.)

He also went on to lament about the "great damage and hurt" the impeachment process has inflicted "upon wonderful and loving members of my family."

Trump with Donald Trump Jr. REUTERS/Lucas Jackson

"Any member of Congress who votes in support of impeachment ... is showing how deeply they revile and how truly they detest America's Constitutional order," he wrote.

The president also took some time out to lob attacks at Biden, whom he and his allies have accused, without evidence, of criminality based on his role in ousting a former Ukrainian prosecutor accused of corruption.

"Even Joe Biden admitted just days ago in an interview with NPR that it 'looked bad.' Now you are trying to impeach me by falsely accusing me of doing what Joe Biden has admitted he actually did," Trump wrote.

(This is not what Biden said during the interview. When he said it "looked bad," he was referring to his son's employment on the board of Burisma Holdings, not his own role in ousting the prosecutor.)

He went on to emphasize how Zelensky and other Ukrainian officials said they did not feel pressured when Trump asked for politically motivated investigations while holding up military aid and the White House meeting.

(It's true that Zelensky said he didn't feel pressured and that there was "no blackmail." But context matters, especially in a geopolitical relationship like the US and Ukraine's, where there is a clear imbalance of power. According to a report from Insider's John Haltiwanger last month, Ukraine is still reliant on US military assistance as it fends off Russian aggression. By acknowledging feeling pressured, Zelensky would risk angering Trump.)

Trump called the second article of impeachment against him, which charges him with obstruction of Congress, "preposterous and dangerous."

"House Democrats are trying to impeach the duly elected President of the United States for asserting Constitutionally based privileges that have been asserted on a bipartisan basis by administrations of both political parties throughout our Nation's history," Trump wrote.

(Multiple legal and constitutional scholars, as well as reports from the House judiciary and intelligence committees, found that Trump's obstruction in the impeachment inquiry is unprecedented and has no parallel comparison throughout American history. He blocked all executive-branch employees and agencies from testifying — the ones who testified did so in defiance of his orders — and he refused to participate in the hearings or send a lawyer, all while claiming the process had shut him out.)

Jonathan Turley. Salwan Georges/The Washington Post / Getty

He added: "As liberal law professor Jonathan Turley warned when addressing Congressional Democrats: 'I can't emphasize this enough … if you impeach a president, if you make a high crime and misdemeanor out of going to the courts, it is an abuse of power. It's your abuse of power. You're doing precisely what you're criticizing the President for doing.'"

(Turley frequently argued on behalf of the Republican Party during former President Bill Clinton's impeachment in 1998 and advocated for his removal from office. In fact, the arguments he made at the time were in direct contradiction to what he testified before Congress during Trump's impeachment hearing.)

The president went on to accuse Democrats of having "a full-fledged case of what many in the media call Trump Derangement Syndrome."

"You are unwilling and unable to accept the verdict issued at the ballot box during the great Election of 2016," the letter said. "So you have spent three straight years attempting to overturn the will of the American people and nullify their votes. You view democracy as your enemy!"

(Hillary Clinton won the popular vote in the 2016 election, beating Trump by 3 million votes.)

"I have been deprived of basic Constitutional Due Process from the beginning of this impeachment scam right up until the present," Trump wrote. "I have been denied the most fundamental rights afforded by the Constitution, including the right to present evidence, to have my own counsel present, to confront accusers, and to call and cross-examine witnesses, like the so-called whistleblower who started this entire hoax with a false report of the phone call that bears no relationship to the actual phone call that was made."

(Again, House lawmakers gave Trump the opportunity to attend his public impeachment hearings and have counsel present to offer rebuttals. Also, the whistleblower's account of the phone call has been confirmed not just by the White House's own notes but also by more than a dozen witnesses who either had firsthand knowledge of the conversation or heard accounts of it from others.)