A vote on impeachment charges against Donald Trump could take place this week, according to the chairman of the House Judiciary Committee.
Jerrold Nadler said draft articles were already being prepared based on the evidence heard during the inquiry over the last months.
He said it was possible the panel could vote this week.
Monday’s televised committee hearing has been described by one official as a collision between the Democrats’ “world of facts” and with Republicans’ “world of conspiracy theories”.
Witnesses have told the impeachment inquiry Mr Trump sought to pressure Ukrainian president Volodymyr Zelensky into investigating his political rival, former vice-president Joe Biden.
He is said to have ordered the withholding of $391m (£298m) in military aid to Ukraine and a White House meeting until the probe was announced publicly.
Hundreds of law academics have signed a letter to Congress stating their belief that there is “overwhelming evidence” that the US president engaged in impeachable conduct.