No Rooinek
The Republicans submitted a list of people to be called to testify and the Chairman Schiff refused to call them. Giulani offered to testify and Schiff was shit-scared and did not call him. Pompeo was never called to testify by Schiff and Bolton is a warmonger Trump kicked him out, The witnesses Schiff did call up got so mangled that they could only produce hearsay evidence,
Under questioning they got so mixed up that they had to be protected by Schiff, Two got caught out lying and that was bad news too.
The fact is that Trump has ZERO obligation to appear before the House enquiry - he may or may not appear before the Senate - which is converted to a proper Court Hearing under the Chairmanship of the Chief Justice - where proper judicial procedures are followed, not the procedures Schiff decided upon.
Why did Trump withheld the military aid to Ukraine - and please note Obama refused outright to grant any military aid to Ukraine even when they were in a full blown war against Russia, He was acting as Putin's bribed agent in that refusal and there is actual proof of it, So lets give you the real reasons for holding back the military aid:-
* There was military aid given to Ukraine under Trump before and a major portion of the money ended up in the pocket of Boris Pasternak - an arms manufacturer in Ukraine who has corrupt links with Schiff and Pelosi - the Ukraine being the most corrupt country in Europe. Trump for the first time had a review done on Foreign aid and will not approve anything going to corrupt countries and that include arms to Ukraine.
* The previous President of Ukraine (Poroshenko) was even more corrupt than his pro-Moscow predecessor and when an election was held in Ukraine in May 2019 he was defeated by Zelensky - whose main campaign was to fight corruption in Ukraine. When he took over the Government in Ukraine the first action was to start implementing his corruption cleaning up campaign in Ukraine.
* Trump insisted that NATO member countries should also contribute on the same percentage basis as applicable to other activities as to arms provision to Ukraine and they were not moving despite the fact that they have a bigger interest in Ukraine than the USA.
Trump was approached by Senator Johnson of Wisconsin on the issue and they discussed it in detail - Johnson afterwards made a public statement on the issue. After dealing with the above issues - Trump released the aid on the basis that NO money will be transferred to Ukraine itself, The USA will buy Javelin Missiles directly and have the missiles delivered to Ukraine together with instructors to train Ukraine in the missile usage,
That story about Biden is total BS - Biden and his son was active in extremely questionable activities in Ukraine and Biden told Poroshenko to fire the Investigator who was investigating Burisma on the Board of which Hunter Biden was serving, Biden claimed that The Prosecutor was corrupt himself and was not investigating Burisma. He lied and the house of the Chairman of Burisma was raided before the Prosecutor was fired. He also phoned Poroshenko three times after the raid and before he went to Ukraine threatening them that $1 billion of US aid will be withheld if the prosecutor was not fired, Biden himself told the firing story and his threat to Ukraine on TV.
There is a huge difference in investigating Biden and what Trump asked during the conversation with Zelensky was about the political campaign issues involving Ukraine in the Russian hoax story in 2016 - clear request as per the transcript. That is when Zelensky raised the Biden issue as part of Ukraine's own investigation of corruption and Trump said he was disturbed by what Biden himself said about withholding of aid and that Giulani has evidence on the issue and Zelensky could deal with him on it.
Trump would be totally irresponsible if there were bribery and corruption by a high-level US office-holder being investigated and he refused to help the country doing the investigation. It had ZERO to do with the election campaign of 2020 at all. If you believe that you will also believe the moon is made of green cheese.
However, the story you came up with is the myth the Democrats are using in the Impeachment story and is not supported by any documented evidence at all. This is the third time the Democrats tried to start with an effort to impeach Trump and the first two misfired because it was based on distortion as to collusion between Trump and the Russians in the 2016 election of which Mueller could find zero evidence. The Impeachment will go nowhere - because it is based on a myth created by Schiff and co.