White House: Trump 'will not participate in impeachment hearing'
Mr Trump could not be expected to participate "fairly", White House counsel Pat Cipollone said in a letter to the House Judiciary Committee.
Last week, Chairman Jerrold Nadler said Mr Trump could either attend or "stop complaining about the process".
The White House did not say whether Mr Trump would attend a second hearing.
It said it would respond separately to an invitation to the second hearing - which does not yet have a date set - by Friday.
The letter, which has been published by Politico, accused the House committee of a "complete lack of due process and fundamental fairness" in the inquiry.
It said the invitation to attend on 4 December would fail to give the White House adequate time to prepare for the hearing and did not give information about the witnesses.
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