Factbox: Trump impeachment - what happens next?

House Speaker Nancy Pelosi will discuss next steps with rank-and-file Democrats at a morning caucus meeting in the U.S. Capitol.The same lawmakers, who represent the House majority, voted along party lines on Dec. 18 to impeach Trump over his dealings with Ukraine.Pelosi has already directed House Judiciary Committee Jerrold Nadler to be ready to bring forward a resolution that would formally transmit the charges against Trump to the Senate.