Chief Justice John Roberts arrived in the U.S. Senate Thursday afternoon to prepare for his role presiding over the impeachment trial of President Trump.
Sen. Chuck Grassley, an Iowa Republican and president pro tempore, conducted the swearing-in of Roberts following a roll-call vote to summon lawmakers to the chamber.
Roberts then swore in 99 of the 100 senators who will serve as impeachment jurors. Sen. James Inhofe, an Oklahoma Republican, was absent Thursday.
The trial will begin Tuesday, Jan. 21, with Roberts presiding.
House Democrats sent the Senate two articles of impeachment charging Trump with abuse of power and obstruction of Congress.
Roberts, in administering the oath, asked lawmakers to pledge “you will do impartial justice according to the Constitution and laws, so help you God.”
Lawmakers were then called to a desk on the floor of the Senate to sign an oath book.
Chief Justice John Roberts is sworn in by Senate pro tempore Chuck Grassley to preside over the historic Senate impeachment trial. https://t.co/NQbeUdSaZO pic.twitter.com/tGmDuwvDgX
— ABC News (@ABC) January 16, 2020
