In a defiant response on Sunday night, the White House informed Democrats that Trump and his lawyers would not participate in Wednesday's hearing, citing a lack of "fundamental fairness". "The evidence does not support the accusation that President Trump obstructed the Democrats" impeachment inquiry'.
The GOP report is expected to be released Tuesday, the same day Democrats on the House intelligence committee will release their own report.
Speaking on "Fox News Sunday," Rep. Doug Collins, R-Ga., the top Republican on the Judiciary panel, said he understood why the White House would not want to participate in a hearing - it is "just another rerun".
According to testimony and a rough transcript of a July phone call by Trump to the Ukrainian president, Trump wanted Ukraine to announce investigations that would harm his political rival, Democrat Joe Biden, and bolster a debunked theory that Ukraine meddled in the 2016 USA presidential election. He had been invited to attend "directly or through a counsel" by NAME, the chairman of the House Judiciary Committee.
Referring to President Trump directly, he added: "It tells you he doesn't have a lot of friends".More news: Putin, Xi inaugurate `Power of Siberia` pipeline to boost energy ties
"The Democrats' impeachment inquiry is not the organic outgrowth of serious misconduct; it is an orchestrated campaign to upend our political system", the Republicans wrote.
Mr Cipollone lambasted Mr Nadler's claim that the process was "consistent" with historical impeachment inquiries, arguing that President Bill Clinton had a fairer hearing in 1998.
For his part, Trump echoed that sentiment, telling reporters on Monday that the North Atlantic Treaty Organisation trip is "one of the most important journeys we make as president" and the summit date was established a year ago.
Asked why neither he nor his lawyer will attend the hearing, Trump told reporters at the White House shortly before he departed for the North Atlantic Treaty Organisation leaders summit in London that he made the decision "because the whole thing is a hoax".
Late Sunday, White House counsel Pat Cipollone denounced the "baseless and highly partisan inquiry".More news: 'Faultless' Van Dijk deserves to win Ballon d'Or ahead of Messi - Gerrard
As the impeachment inquiry intensifies, Wednesday's hearing will be a milestone. Back during Robert Mueller's investigation into Russian interference of the 2016 election, Trump originally said he would cooperate and answer Mueller's questions, but he then decided not to for fear of getting caught in a "perjury trap"-because I guess the idea of just not lying wasn't an option, then or now, apparently".
"The reading is supported by President Trump's subsequent reference to Special Counsel Robert Mueller, who had testified the day before about his findings, and to Attorney General William Barr, who had initiated an official inquiry into the origins of the USA government's 2016 Russian Federation investigation. He's made a judgment now and I think that's probably the right judgment".
Congressional Democrats have so far defended their process, arguing that Trump is being given opportunities to defend himself and that the White House should not have blocked current and former administration officials from testifying, as well as relevant documents from lawmakers.
Collins called Wednesday's hearing "a complete American waste of time".
However, Schiff's committee failed to prove Trump had taken action to withhold military aid from Ukraine. McClintock said he did not believe Trump did anything wrong in the July 25 call with Zelenskiy that is at the heart of the investigation. "He also doesn't use the smarmy talk of politicians", McClintock said.More news: Apple AirPods Unbelievable Cyber Monday Deals You Need To Know