President Donald Trump’s White House is reportedly going to send House Speaker Nancy Pelosi (D-Calif.) a letter on Friday, “daring” the speaker to hold a vote on the House Democrats’ impeachment inquiry against him — which she has so far not committed to doing because she’s said she wants to find all “the facts.”

Related: Nancy Pelosi Defends Adam Schiff on His ‘Parody’ Version of Trump’s Call

She has also said, interestingly, that she wants to be “prayerful” about everything she’s doing against this president.

In the letter to be sent on Friday, the White House allegedly will say it will not cooperate with the inquiry because Pelosi thus far has not held a formal vote on impeachment on the House floor, according to Fox News and other outlets.

The tone of the letter apparently will be similar to the one House Minority Leader Kevin McCarthy (R-Calif.) sent to Pelosi on Thursday.

In his letter, McCarthy demanded Pelosi end her impeachment probe until “equitable rules and procedures” are set up.

See the GOP leader’s tweet just below outlining his request:

“Unfortunately, you have given no clear indication as to how your impeachment inquiry will proceed — including whether key historical precedents or basic standards of due process will be observed,” McCarthy wrote in the letter, in part.

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“In addition, the swiftness and recklessness with which you have proceeded [have] already resulted in committee chairs attempting to limit minority participation in scheduled interviews, calling into question the integrity of such an inquiry.”

McCarthy is referring to the claim that House Intelligence Committee Chairman Adam Schiff (D-Calif.) allegedly limited the number of questions Republicans could ask on Thursday during the testimony of former U.S. envoy to Ukraine Kurt Volker.

Volker resigned from his position last week.

Trump took to Twitter to praise McCarthy for his letter.

He wrote, “Leader McCarthy, we look forward to you soon becoming Speaker of the House. The Do Nothing Dems don’t have a chance!”

But Pelosi fired back at McCarthy.

She said that “existing rules of the House provide House committees with full authority to conduct investigations for all matters under their jurisdiction.”

She also found a way to refer to the Constitution.

“The fact that the [House Republicans’] loyalty is to Trump and not to the Constitution is not going to slow down or impair our ability to keep the republic of our founders envisioned,” she added on Twitter.

Pelosi and her fellow Democrats launched their impeachment inquiry after a so-called whistleblower claimed Trump took part in a quid pro quo scheme during a July 25 phone call with Ukrainian President Volodymyr Zelensky.

The “whistleblower,” however, never heard the phone call firsthand.

His or her information was all based on hearsay — and that person’s sources have not been determined or identified at this point in time.

Related: White House Releases Transcript of Trump Phone Call

Congressional Democrats allege that Trump used $400 million in committed military aid to Ukraine as “leverage” to convince Ukrainian officials to investigate Democratic presidential candidate Joe Biden and his son Hunter Biden for their business dealings connected to that country.

Trump, however, never mentioned military aid in the conversation — a full transcript of which he released early on.

And Trump never referenced the 2020 election at all in his phone conversation — his comment about the Bidens was in reference to their past activities with Ukraine in regard to corruption.

Trump has maintained from the start that he did nothing wrong during the phone call — and has referred to the impeachment inquiry as a “Democrat scam,” among other terms.

It was revealed late this week that the whistleblower is a registered Democrat, “a source familiar with the ongoing investigation told CNN Thursday,” as Jake Tapper of CNN reported on Thursday afternoon.

“The intelligence community’s inspector general, Michael Atkinson, acknowledged an indication of possible political bias in his assessment of the complaint but made clear that it did not change his overall conclusion that it appeared to be credible,” Tapper also noted.

That latest news came out late Thursday afternoon — and its impact is still reverberating.

Trump, for his part, has always said the case was biased against him.

See these related tweets below — and share your thoughts on this story.