House Democrats said that they will vote on October, 31 to formalise procedures for the next phase of the impeachment inquiry into US President Donald Trump.
Democrats said the move would "ensure transparency and provide a clear path forward" as the inquiry continues.
Earlier, House Intelligence Committee Chairman Adam Schiff said that a former deputy national security adviser had "no basis in law" to skip a deposition Monday and that his failure to appear was further evidence of Trump"s efforts to obstruct Congress.