The charge of abuse of power rests on the claim that the President wanted the investigation of the Bidens to advance his chances for reelection, so the only relevant witnesses or documents would have to directly show that was his motivation and clearly, the House was unable to find and such witnesses or documents so all the fuss the Democrats are making is just to extend their political stunt to advance their own political interests.
As I posted citing multiple sources earlier - here's another:
"Officials in Ukraine reportedly opened an investigation into an energy company that employed former Vice President Joe Biden’s son long before President Donald Trump’s July 25 nothing-burger of a telephone call with Ukrainian President Volodymyr Zelensky that spurred the Democrats’ haphazard, increasingly Kafkaesque impeachment inquiry.
The time element of the revelation, devastating as it is to the 2016-election-nullification push disguised as an impeachment process, has been largely ignored by the mainstream media which is overly preoccupied –as usual— attacking President Trump."
How can someone pressure someone else into doing something they are already doing?
Just one of the devastating facts against the Democrats' Impeachment - COUP attempt....
Ukraine Was Investigating Hunter Biden Before Trump’s Phone Call
Of course they were, Giuliani has been working on this scam for over a year. He started with the previous administration, inviting the previous prosecutor Lutsenko to meet with him in New York....
And Lutsenko said he'd do Giuliani the "favor" if GIuliani would get Ambassador Yavanovich fired and removed. THE FIRST illegal, quid pro quo.
Lutsenko was corrupt and Yavanovich was trying to root out the corrupt... She was getting in his way....
So Giuliani, Solomon, Parnas, Victoria and Joe DiGenova, Don Junior, Trump, and Rep Sessions from Texas, who was paid an illegal bribe by Parnas via illegal campaign donation, to all campaigned promoted a smear campaign on our US Ambassador Yavonovich, AND GOT HER FIRED as the Ukraine Ambassador.
When Lutsenko's boss was not reelected, he came out And reported he found NO WRONG DOING by Hunter Biden, no crimes, and how much money someone is paid, No matter how much, is not a crime.....in the Ukraine.