Washington (CNN) Since the Senate impeachment trial began last week, Chief Justice John Roberts has been mainly out of the camera's line of sight. He has tried to maintain the chamber's decorum, as when he admonished the legal teams against nastiness, citing a 1905 Senate trial precedent against use of the word "pettifogging." He will be the voice of senators, with his visage at the center of the screen as he reads their questions. Roberts will pose questions that the senators write on forms to the US House managers and President Donald Trump's lawyers. At the start of each query, Roberts is expected -- per tradition -- to announce which senator has put forward the question.

Source: CNN January 29, 2020 11:03 UTC