The White House on Tuesday said it will not participate in the U.S. House of Representatives’ impeachment inquiry, calling it an unprecedented and dangerous path and an attempt to undo the results of the 2016 presidential election.

The eight-page letter signed by White House counsel Pat Cipollone said there is no legitimate basis for the inquiry and that it violates the due process and separation of powers clauses. The letter said the committees currently handling the inquiry have failed to ensure President Donald Trump’s right to see evidence, cross-examine witnesses, make objections to the examination of witnesses or evidence, and to respond to evidence and testimony.