‘Stay out of the way’: Fox News sources say Justice Roberts will let GOPers win tie votes on witnesses
Chief Justice John Roberts

Chief Justice John Roberts is expected not to weigh in heavily during the question and answer phase of the impeachment trial of President Donald Trump.

As the trial moves to the new phase on Wednesday, Roberts has the option of "inserting himself" into the process to rule on questions or other matters, according to Fox News correspondent Chad Pergram.

But sources told the Fox News reporter that Roberts will follow the model of former Chief Justice William Rehnquist who presided over President Bill Clinton's impeachment trial in 1999.

Under the Senate rules, measures that do not receive a majority of votes fail. So if a Senate vote of witnesses was tied 50-50, the measure would not pass. Roberts could choose to break the tie but he is not expected to do so.

Read Pergram's preview of the question and answer session below.