The White House said on Friday it would refuse to take part in hearings in the U.S. House of Representatives set for next week that will consider what articles of impeachment to bring against President Donald Trump.

In a letter to Judiciary Committee Chairman Jerrold Nadler, White House counsel Pat Cipollone called the Democrats' impeachment inquiry "completely baseless" and said that House Speaker Nancy Pelosi had ordered Democrats to proceed with articles of impeachment "before your committee has heard a single shred of evidence."

"We don't see any reason to participate because the process is unfair," said a senior administration official, speaking on condition of anonymity. "We haven't been given any fair opportunity to participate. The speaker has already announced the predetermined result and they will not give us the ability to call any witnesses."