Top US Democrat Nancy Pelosi said Sunday she believes the impeachment probe into President Donald Trump produced "enough testimony to remove him from office" when the case moves to the Senate.

Speaker Pelosi will meet with the House Democratic caucus early Tuesday to prepare for the formal vote required to send the two articles of impeachment passed by the House on to the Senate, as early as this week.

Top US Democrat Nancy Pelosi said Sunday that she believes the impeachment hearings against Donald Trump produced "enough testimony to remove him from office" when the case moves to the Senate.